General Carbide Acquires Automotive Tooling Supplier, Only Tool January 23, 2018 General Carbide Corp. (Greensburg, PA) has purchased automotive tooling supplier Only Tool (Ypsilanti, MI). Only Tool has developed its expertise in cold-form tool manufacturing under the leadership of co-owners Ray Fender and Mick Ruffolo, who, under terms of the agreement, will continue to operate the business.