Exhibit 99.1

EXECUTION COPY

AMENDMENT dated as of December 31, 2007 (this “Amendment”) to the Receivables Transfer Agreement dated as of June 6, 2002, as amended June 3, 2005 and July 5, 2005 (as amended or modified and in effect from time to time, the “Agreement”), by and among TSPC, INC., as Transferor (the “Transferor”), TRIMAS CORPORATION, individually, as Collection Agent, TRIMAS COMPANY, LLC, individually, as Guarantor under the Limited Guaranty set forth in Article IX thereto, the several commercial paper conduits identified on Schedule B thereto and their respective permitted successors and assigns (the “CP Conduit Purchasers”), the several financial institutions identified on Schedule B thereto as “Committed Purchasers” and their respective permitted successors and assigns (the “Committed Purchasers”), the agent bank of each CP Conduit Purchaser and Committed Purchaser on Schedule B thereto and its permitted successor and assign (the “Funding Agents”), and JPMORGAN CHASE BANK, N.A., f/k/a JPMorgan Chase Bank, as Administrative Agent for the benefit of the CP Conduit Purchasers, the Committed Purchasers and the Funding Agents (the “Administrative Agent”).

In consideration of the mutual agreements herein contained and other good and valuable consideration, the sufficiency and receipt of which are hereby acknowledged, the parties hereto hereby agree as follows:

SECTION 1.  Defined Terms.  Capitalized terms used but not otherwise defined herein will have the meanings as defined in the Agreement.

SECTION 2.  Amendments to Definitions.  The definition of Commitment Expiry Date set forth in Schedule A to the Agreement is hereby amended in its entirety to read as follows:

“Commitment Expiry Date” shall mean the earliest to occur of (i) the date on which all amounts due and owing to the CP Conduit Purchasers and the Committed Purchasers under the Receivables Transfer Agreement and the other Transaction Documents have been paid in full, (ii) the date on which the Aggregate Commitment has been reduced to zero pursuant to the Receivables Transfer Agreement, (iii) The Termination Date, and (iv) February 29, 2008.

SECTION 3.  Amendment to Schedule of CP Conduit Purchasers, Committed Purchasers and Funding Agents.  Schedule B to the Agreement is hereby replaced with Schedule B to this Amendment.

SECTION 4.  Reduction of Commitments; Waiver of Written Notice.  The Transferor hereby reduces the Commitments of the Committed Purchasers to $75,000,000.  The written notice requirement set forth in Section 2.07 of the Agreement is hereby waived solely with respect to such reduction.

SECTION 5.  Representations and Warranties.  The representations and warranties of each party set forth in the Agreement shall be true and correct in all material respects, in each case on and as of the date hereof, except to the extent such representations and warranties expressly relate to an earlier date (in which case such representations and warranties shall be true and correct in all material respect as of such earlier date).

SECTION 6.  Governing Law.  This Amendment shall be governed by, and construed in accordance with the laws of the State of New York.

SECTION 7.  Counterparts.  This Amendment may be executed in counterparts, each of which will be an original, but all of which together will constitute a single agreement.

SECTION 8.  Agreement in Full Force and Effect.  Except as expressly amended hereby, the Agreement will continue in full force and effect in accordance with the provisions thereof as in existence on the date hereof.  After the date of the effectiveness hereof, any reference to the Agreement will mean the Agreement as amended by this Amendment.

SECTION 9.  Conditions to Effectiveness.  This Amendment shall be effective as of the date hereof, upon satisfaction on or prior to the date hereof, of the following condition:  this Amendment shall have been executed and delivered by the parties hereto.

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed and delivered by their duly authorized officers as of the date hereof.

TSPC, INC., as Transferor
By:				/s/ Robert J. Zalupski
Name:				Robert J. Zalupski
Title:				Vice President and Treasurer
TRIMAS CORPORATION, individually and as Collection Agent
By:			/s/ Robert J. Zalupski
Name:			Robert J. Zalupski
Title:			Vice President Finance and Treasurer
TRIMAS COMPANY, LLC, individually and as Guarantor
By:			/s/ Robert J. Zalupski
Name:			Robert J. Zalupski
Title:			Vice President and Treasurer
JPMORGAN CHASE BANK, N.A., as Administrative Agent
By:		/s/ Cathleen D. Dettling
Name:	Cathleen D. Dettling
Title:		Vice President

PARK AVENUE RECEIVABLES COMPANY LLC
By:	JPMorgan Chase Bank, N.A., its Attorney-In-Fact
By:	/s/ Cathleen D. Dettling
Name:	Cathleen D. Dettling
Title:	Vice President
JPMORGAN CHASE BANK, N.A., as Committed Purchaser for Park Avenue Receivables Company LLC
By:	/s/ Cathleen D. Dettling
Name:	Cathleen D. Dettling
Title:	Vice President
JPMORGAN CHASE BANK, N.A., as Funding Agent for Park Avenue Receivables Company LLC
By:	/s/ Cathleen D. Dettling
Name:	Cathleen D. Dettling
Title:	Vice President

SCHEDULE B

Schedule of CP Conduit Purchasers,

Committed Purchasers and Funding Agents

CP CONDUIT PURCHASERS:

Park Avenue Receivables Company LLC

10 S. Dearborn Street

Chicago, IL 60603

Suite IL1-0079

Attention:  PARCO Funding Manager

Telephone:  312-732-7206

Telecopy:  312-732-1844

E-mail:  ABS.Treasury.Dept@jpmorgan.com

CP Conduit Funding Limit: $ 75,000,000

COMMITTED PURCHASERS:

JPMorgan Chase Bank, as Committed Purchaser for Park Avenue Receivables Company LLC

10 S. Dearborn Street

Chicago, IL 60603

Suite IL1-1729

Attention:  Account Manager

Telephone: 312-732-4984

Telecopy:  312-732-3600

E-mail:  abf.portfolio.management@jpmorgan.com

FUNDING AGENTS:

JPMorgan Chase Bank, as Funding Agent for Park Avenue Receivables Company LLC

10 S. Dearborn Street

Chicago, IL 60603

Suite IL1-0079

Attention:  ABS Treasury Department

Telephone:  312-732-7206

Telecopy:  312-732-1844

E-mail:  ABS.Treasury.Dept@jpmorgan.com