Exhibit 23.4
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-4 of our reports dated March 1, 2007, relating to the consolidated financial statements and financial statement schedule of Grant Prideco, Inc. (which report expresses an unqualified opinion on those financial statements and financial statement schedule and includes an explanatory paragraph regarding the Company’s adoption of Statement of Financial Accounting Standard No. 123(R),Share-based Payment,on January 1, 2006), and management’s report on the effectiveness of internal control over financial reporting, appearing in the Annual Report on Form 10-K of Grant Prideco, Inc. for the year ended December 31, 2006, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.
/s/ Deloitte & Touche LLP
Houston, Texas
January 24, 2008
January 24, 2008