Tapered Bushing Sprockets (TL) Bushing-Bore Sprockets 
for ANSI Roller Chain. Alter bore size without replacing your sprocket.Easy to install, Taper-Bushed Sprockets give you the flexibility to use the same sprocket with different shaft diameters. Purchase Taper-Bushings(Sold separately) to complement the bore sizes you need. Use with ANSI one and double-strand chain. These metal sprockets and bushings meet all ANSI requirements.
