Manufacturers Part (MPN): ALL18095. Manufactured by: ALLSTAR PERFORMANCE. Fits V-Belt 41in x 1/2in Industrial by Allstar Performance ALL86129. Rivet - Multi-Grip - 9/16 in Head - 3/16 in Steel Mandrel - 1/16-3/8 in Grip Range - Aluminum - Black Paint - Set of 250 Product Notes (if available).