AMENDMENT NO. 1
                            TO CONTRIBUTION AGREEMENT


                  THIS AMENDMENT NO. 1 TO CONTRIBUTION AGREEMENT (this
"Amendment") is entered into as of March 2, 2000 by and among SUNSOURCE INC., a
Delaware corporation ("SunSource"), SUNSOURCE INDUSTRIAL SERVICES COMPANY, INC.,
a Delaware corporation ("Parent"), KAR PRODUCTS LLC (as successor by merger to
Kar Products, Inc.), a Delaware limited liability company ("Kar Products"),
SUNSOURCE CANADA INVESTMENT COMPANY, an unlimited liability company organized
under the laws of the Province of Nova Scotia ("SunSource Canada"), A&H HOLDING
COMPANY, INC., a Michigan corporation ("A&H Holding"), A. & H. BOLT & NUT
COMPANY LIMITED, a company organized under the laws of the Province of Ontario
("A&H Bolt"), and GC-SUN HOLDINGS, L.P., a Delaware limited partnership (the
"Partnership"). Capitalized terms used in this Amendment and not otherwise
defined herein shall have the meanings ascribed to them in the Contribution
Agreement (as defined below).

                                    RECITALS

                  WHEREAS, SunSource, Parent, Kar Products, SunSource Canada,
A&H Holding, A&H Bolt and the Partnership entered into that certain Contribution
Agreement, dated as of February 10, 2000 (as further amended, supplemented,
restated or otherwise modified from time to time, the "Contribution Agreement");
and

                  WHEREAS, the parties signatory hereto desire to amend the
Contribution Agreement as set forth herein;

                  NOW THEREFORE, in consideration of the mutual covenants herein
and other good and valuable consideration, the parties hereto agree as follows:

Section 1         Amendments to the Contribution Agreement.

                  As of the date hereof and prior to the Closing, the parties
hereby amend the Contribution Agreement and the Exhibits and Schedules thereto
as follows:

                  (a) Section 1.1 (Certain Defined Terms) of the Contribution
Agreement is hereby amended:

                           (i) by inserting the following definition immediately
         after the definition of "Ancillary Agreements":

                           "Assignment Agreement" shall mean that certain
                  Assignment Agreement to be executed by SunSource Industrial as
                  of the Closing Date effecting the Contribution and assignment
                  of the Kar Interest to the Partnership pursuant to this
                  Agreement."




                           (ii) by inserting the following sentence at the end
         of the definition of "Current Liabilities":

                           "The parties hereto acknowledge and agree that the
                  term "Current Liabilities" shall not include the Intercompany
                  Indebtedness."

                           (iii) by inserting the following definition
         immediately after the definition of "Environmental Laws":

                           "Equity Holders Agreement" shall mean that certain
                  Equity Holders Agreement to be entered into by the
                  Partnership, SunSource, the Contributors and the other parties
                  signatory thereto as of the Closing Date in substantially the
                  form attached hereto as Exhibit O".

                           (iv) by inserting the phrase "the Partnership and/or"
         immediately after the phrase "entered into by" in the second line of
         the definition of "Fee Agreements".

                           (v) by (x) deleting the word "and" in the last line
         of the definition of "Ancillary Agreements", and (y) inserting the
         phrase ", (vii) the Assignment Agreement and the other instruments,
         certificates, assignment agreements, bills of sale and other documents
         effecting the Contributions delivered pursuant to Section 2.5(a)(i) of
         this Agreement, and (viii) the Equity Holders Agreement" immediately
         prior to the period at the end of such definition.

                  (b) Section 1.2 (Other Defined Terms) is hereby amended to
insert a reference to "UPS Rates" under the column heading "Term" and a
corresponding reference thereto to "9.2(a)(x)" under the column heading
"Section", in each case immediately after the respective references to "Unit
Pledge Agreement" and the corresponding section reference thereto.

                  (c) Section 2.6 (Adjustment to Intercompany Indebtedness) of
the Contribution Agreement is hereby deleted in its entirety and the phrase
"[Intentionally deleted]" is substituted therefor (and the corresponding
reference to Section 2.6 in the Table of Contents to the Contribution Agreement
is hereby deleted and the phrase "[Intentionally deleted]" is substituted
therefor).

                  (d) Section 8.2 (Conditions to Obligations of the Partnership)
of the Contribution Agreement is hereby amended:

                           (i) by deleting the phrase "the conditions specified
         in Sections 8.2(a), (b), (e) and (g) of this Agreement" in the third
         line of subsection (i) thereof and substituting therefor "the
         conditions specified in Sections 8.2(a), (b) and (e) of this
         Agreement".

                           (ii) by deleting subsection (r) thereof in its
         entirety.

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                  (e) Section 9.1 (Survival of Representations, Etc.) of the
Contribution Agreement is hereby amended by deleting the phrase "without giving
effect to any consensual extension of such period" at the end of subsection (b)
thereof and substituting therefor "without giving effect to any consensual
extension of such period by the Partnership or its subsidiaries after the
Closing".

                  (f) Section 9.2 (Indemnification) of the Contribution
Agreement is amended (i) by deleting the word "and" at the end of paragraph
(viii) of subsection (a) thereof and (ii) by inserting the following immediately
after paragraph (ix) of subsection (a) thereof:

                           "(x) the aggregate difference in each fiscal quarter
                  between (A) the actual freight costs incurred by the
                  Partnership and its subsidiaries for shipping packages
                  (internally or to customers) and (B) the freight costs which
                  would have been incurred by the Partnership and its
                  subsidiaries had they received a 27.5% discount from the
                  United Parcel Service's published UPS Commercial Ground
                  Service Rate Chart in effect at that time ("UPS Rates") on
                  such shipping; provided, however, (1) such indemnity shall
                  expire with respect to shipping occurring on and after August
                  23, 2003 and (2) the difference calculated in any fiscal
                  quarter shall in no event be less than zero or exceed the
                  lesser of (x) the amount which would have been calculated
                  (under clause (A) above) had the Partnership and its
                  subsidiaries received a 23% discount from UPS Rates on such
                  shipping and (y)(I) during calendar year 2000, $55,000 per
                  fiscal quarter (or prorated portion thereof based on calendar
                  days), (II) during calendar year 2001, $60,500 per fiscal
                  quarter (or prorated portion thereof based upon calendar
                  days), (III) during calendar year 2002, $66,500 per fiscal
                  quarter (or prorated portion thereof based upon calendar days)
                  and (IV) during calendar year 2003, $73,150 per fiscal quarter
                  (or prorated portion thereof based upon calendar days); and

                           (xi) any and all Liabilities arising out of or
                  relating to the Lenz Oil Service, Inc. site in Downers Grove
                  Township, Du Page County, Illinois."

                  (g) Section 9.4 (Tax Indemnification) of the Contribution
Agreement is hereby amended:

                           (i) by deleting the word "or" immediately after the
         comma at the end of clause (ii) of subsection (a) thereof and by
         inserting the following language at the end of the first sentence of
         subsection (a) thereof:

                           ", or (iv) imposed under Section 116(5) of the Income
                  Tax Act (Canada) in respect of the contribution and transfer
                  of the Canada Shares to the Partnership pursuant to Section
                  2.1(a)(ii) of this Agreement in the event that: (A) A&H
                  Holding fails to deliver to the Partnership the Tax Compliance
                  Certificate referred to in Section 5.3(c)(i) of this Agreement
                  on or before the last business day that is not more than

                                       3



                  thirty (30) days after the end of the month in which the
                  effective date of such contribution and transfer occurred or
                  (B) the fair market value of the Canada Shares at the
                  effective date of such contribution and transfer is determined
                  to be an amount in excess of the certificate limit fixed by a
                  certificate issued under Section 116 by A&H Holding and the
                  Partnership or by the Canada Customs and Revenue Agency and
                  agreed to by A&H Holding and the Partnership, or in the event
                  of their disagreement, by a tribunal or court of competent
                  jurisdiction (after all appeal rights have been exhausted or
                  all times for appeal have expired without appeals having been
                  taken)."

                           (ii) by deleting the phrase "without giving effect to
         any consensual extension of such period" at the end of subsection (c)
         thereof and substituting therefor "without giving effect to any
         consensual extension of such period by the Partnership or its
         subsidiaries after the Closing".

                  (h) Section 9.5 (Security; Partnership's Right to Withhold and
Set-Off) of the Contribution Agreement is hereby amended:

                           (i) by inserting the phrase "the amount of any
         Damages" immediately after the word "apply" in the fifth line of
         subsection (b) thereof.

                           (ii) by inserting the following immediately after
         subsection (b) thereof:

                           "(c) Notwithstanding anything to the contrary in this
                  Agreement and without limiting the terms of Section 9.5(b) of
                  this Agreement, and regardless of other means of obtaining
                  payment, the Partnership is hereby authorized at any time and
                  from time to time to withhold and set-off and apply Damages
                  arising under Section 9.2(a)(x) of this Agreement against any
                  amounts owing or that may be owed to any of the SunSource
                  Entities pursuant to the Fee Agreements. Any such withholding,
                  set-off, retention or application by the Partnership shall not
                  constitute a default under, or give any right of dissolution,
                  amendment or other similar rights under the Fee Agreements.
                  Absent fraud or manifest error, the calculation by the
                  Partnership's outside auditor, if requested, of amounts to be
                  calculated under Section 9.2(a)(x) shall be final and binding
                  upon the Indemnifying Party in such circumstances."

                  (i) Section 11.2 (Notices) of the Contribution Agreement is
hereby amended by deleting the phrase "Suite 2330" in subsection (b) thereof and
substituting the phrase "Suite 2830" therefor.

                  (j) Exhibit M to the Contribution Agreement is hereby deleted
in its entirety and the phrase "[Intentionally deleted]" is substituted therefor
(and the corresponding reference to "Exhibit M - Designated Consent" in the List
of Exhibits to the Contribution Agreement is hereby deleted and the phrase
"[Intentionally deleted]" is substituted therefor).

                                       4



                  (k) The Contribution Agreement is hereby amended by adding as
Exhibit O to the Contribution Agreement the "Form of Equity Holders Agreement"
attached hereto as Annex I. The List of Exhibits in the Contribution Agreement
is hereby amended by inserting a reference at the end thereof to "Exhibit O -
Form of Equity Holders Agreement".

                  (l) Schedule 3.17(b) of the Disclosure Schedule is hereby
amended to add the following at the end of the disclosure:

                  "10. Letter from the Office of the Attorney General of the
         State of Illinois dated February 9, 2000 relating to the Lenz Oil
         Service, Inc. site in Du Page County, Illinois."

Section 2         Reference to and Effect Upon the Contribution Agreement.

                  (a) Except as expressly set forth in this Amendment, the
Contribution Agreement (including all Exhibits and Schedules thereto) shall
remain in full force and effect in all respects and is hereby ratified and
confirmed.

                  (b) The execution, delivery and effectiveness of this
Amendment shall not operate as a waiver of any right, power or remedy of any of
the parties under the Contribution Agreement, nor constitute a waiver of any
provision of the Contribution Agreement (including the Exhibits and Schedules
thereto) or any Ancillary Agreement, except as expressly set forth in this
Amendment. Upon the effectiveness of this Amendment, each reference in the
Contribution Agreement to "this Agreement", "hereunder", "hereof", "herein" or
words of similar import shall mean and refer to the Contribution Agreement as
amended hereby.

Section 3         GOVERNING LAW.

                  THIS AMENDMENT SHALL BE SUBJECT TO SECTION 11.11 OF THE
CONTRIBUTION AGREEMENT AS IF IT WERE PART OF SUCH CONTRIBUTION AGREEMENT.

Section 4         Headings.

                  Section headings in this Amendment are included herein for
convenience of reference only and shall not constitute a part of this amendment
for any other purposes.

Section 5         Counterparts.

                  This Amendment may be executed in any number of counterparts,
each of which when so executed shall be deemed an original but all such
counterparts shall constitute one and the same instrument.


                            [Signature page follows]


                                       5

                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be executed as of the date first written above by their respective
officers thereunto duly authorized.

                            GC-SUN HOLDINGS, L.P.


                            By:      GC-SUN G.P., Inc., its general partner


                                     By: /s/ Ronald D. Wray
                                         --------------------------------
                                         Name:  Ronald D. Wray
                                         Title: President


                            SUNSOURCE INC.


                            By: /s/ Joseph M. Corvino
                                -----------------------------------------
                                Name:  Joseph M. Corvino
                                Title: Vice President-Finance



                            SUNSOURCE INDUSTRIAL SERVICES COMPANY, INC.


                            By: /s/ Joseph M. Corvino
                                -----------------------------------------
                                Name:  Joseph M. Corvino
                                Title: Secretary



                            KAR PRODUCTS, LLC (as successor by
                            merger to Kar Products, Inc.)


                            By: /s/ Joseph M. Corvino
                                -----------------------------------------
                                Name:  Joseph M. Corvino
                                Title: Manager




                       A&H HOLDING COMPANY, INC.


                       By: /s/ Joseph M. Corvino*
                           ----------------------------------------------
                           Name:  Joseph M. Corvino
                           Title: Vice President-Finance



                       SUNSOURCE CANADA INVESTMENT COMPANY


                       By: /s/ Joseph M. Corvino
                           ----------------------------------------------
                           Name:  Joseph M. Corvino
                           Title: President



                       A. & H. BOLT & NUT COMPANY LIMITED


                        By: /s/ Joseph M. Corvino*
                            ---------------------------------------------
                            Name:  Joseph M. Corvino
                            Title: Assistant Secretary