This Split Taper Bushed Bore Roller Chain Sprocket is designed for use with standard roller chains. It features hardened high-carbon, heat-treated steel alloy construction for strength and durability in a range of industrial applications. Bushings required. This listing is for each. Technical Specification Item Sprocket Item - Roller Chain Sprockets Roller Chain Sprocket Industry Chain Size 60 Industry Chain Pitch 3/4 Number of Teeth - Sprockets 28 Sprocket Bore Type Split Taper Bushed Bore Outside Dia. 7.11 Number of Chain Rows Single Material - Sprockets Carbon Steel Bushing Required - Sprockets Q1 Pitch Dia. 6.698 Sprocket Hub Type Type B Length through Bore 1.75 Hub Dia. 4.5 For Use With Split Taper Bushing Compliance and Restrictions