Sprocket, Industry Chain Size 41, Industry Chain Pitch 1/2 in, Number of Teeth - Sprockets 9, Plain Bore, Bore Dia. - Sprockets 1/2 in, Outside Dia. 1.67 in, Single Number of Chain Rows, Material - Sprockets Carbon Steel, Max. Bore - Sprockets 5/8 in, Pitch Dia. 1.462 in, Type B, Length through Bore 0.875 in, Hub Dia. 1.125 in