3/4" Duplex - Pilot Bore A full range of sprockets in both Taper bore & Pilot bore are available in Simplex, Duplex and Triplex styles. We also carry a complete range of taper bore bushes and keyway steels to suit. • All sprockets are manufactured to exacting standards and specification • Taper bore bush versions allow for quick and simple installation without the need to machine the sprocket • Boring and keyway service for pilot bore sprockets is available on request • Cast iron and stainless steel sprockets are also available • Double pilot type also available