Z2 Expansion Sleeve Coupling Tension Sleeve Keyless Bushing Clamping Coupler Locking Disk Coupling Connection Taper Bush 1PC Features:High centering accuracy, secure and dependable connectionLong provider existence and simple installation/adjustment/disassemblyRelying on friction transmission,No keyway weakening of the connected elements Widely used in heavy machinery,CNC mechanical device tools, automation package and other fields Please contact us if you can't discover the scale you need