Roller Chain Sprocket; 40 Chain; 17 Teeth; 1 Row of Teeth; Hardened Teeth; 2.974" Outside Diameter; 2.721" Pitch Diameter; B-Hub One Side; Bushed Mount; 1210 Bushing; 1/2" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material

Idler Chain Sprocket; 5/8" Bore; 40 Chain Size; 17 Teeth; Ball Bearing; 1/2" Chain Pitch; 1 Row of Teeth; Roller Chain; Hardened Teeth; 2.974" Outside Diameter; 0.72" Length Thru Bore; Steel