-Product Name : Timing Pulley;Tooth Number : 100;Pitch : 2.032 mm / 5/64"-Bore Diameter : 8 mm / 5/16";Outside Diameter : 40 mm / 1.57"-Fit Belt Width : 11 mm / 0.43";Overall Size : 70 x 26 mm / 2.75" x 1" (D*H)-Material : Aluminum Alloy;Color : Silv..