We can offer you taper lock bush,spilt taper bush and QD bush.
Material: Cast iron, steel.
Taper bush Size: 1008,1108,1210,1215,1310,1610,1615,2012,2517,2525,3020,3030,3525,3535,4030,4040,4535,4545,5040,5050,6050,7060
Surface treatment: Phosphate black 
Application: locking for pulley,coupling,weld on hub,bolt on hub,sprocket or other parts on shaft 
Taper lock bushes, also known as taper lock bushings or taper bushes, are mechanical components used for securing rotating components, such as pulleys, sprockets, or gears, onto shafts in various industrial applications. They provide a secure and concentric connection between the shaft and the mounted component. Taper lock bushes are commonly used to transmit torque and rotation between the shaft and the mounted part.