Roller Chain Sprocket; 40 Chain; 21 Teeth; 1 Row of Teeth; Hardened Teeth; 3.618" Outside Diameter; 3.355" Pitch Diameter; B-Hub One Side; Bushed Mount; SH Bushing; 1/2" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material

Chain Link; 06B-2 Chain Size; Cottered; 9.525MM Chain Pitch; Standard Chain Series; 2 Strand; Carbon Steel; ISO; 6.35MM Roller Diameter; 5.72MM Roller Width; 1.3MM Plate Thickness; 8.2MM Plate Height; Straight; 3.28MM Pin Diameter