2-Pack Oldham Coupling Couplers Compatible with BLV and Other 3D Printer Z axis T8 Lead Screw Hotbed (Oldham Coupling)

The Oldham coupling is made of brass, reduce friction and has sufficient strength, produced by CNC machine, high precision to make the connection gap between three parts lowest, low movement of inertial Its function is to improve the printing quality from the problems caused by the swing of the heat bed during printing, like subtracting the effects for the clearance of not straight lead screw when printing If the lead screw is not straight, the printing precision will be a problem, then this kit will solve it high torsional stiffness, Protect driven parts and support bearings, used to advoid the effects for large radial misalignment OD is 22mm, The center distance between two holes is 16mm, please must measure your lead screw nut installation holes distance before purchasing.