Features 1、4 THROUGH HOLES TO FIX: The high speed shaft gripper has 4 through holes on a 16mm robot grid pattern, through holes allow you to fix high speed shaft clamps to parts with threaded holes 2、INDEPENDENT FIXING MECHANISM AND CLAMPING MECHANISM: Provides a non destructive solution for fixing the parts to the shaft, the parts are fixed by clamping, which will not cause any damage to the fixed parts. The 16mm grid M4 threaded hole fixing mechanism for securing the assembly to other parts and the clamping mechanism for securing the high load shaft clamp to the shaft are completely independent of each other 3、WITHOUT THREAD HOLE SPACING DEFORMATION: With this unique design, you can tighten the double clamping bolts to clamp the high speed shaft clamp on the shaft without worrying about the deformation of the through hole spacing required to install the component to other parts due to the tightening of the clamping mechanism 4、RANDOM INSTALLATION METHODS: During installation, you can also fix the high speed shaft clamp to the gear, sprocket, pulley or wheel first, and then fasten the component to the shaft, because no matter where the high speed shaft clamp is installed, the shaft clamping mechanism can work 5、INSTALL IN HARD TO REACH PLACES: Since the fixing mechanism and the clamping mechanism are completely independent of each other, and the diameter of the outer is 32mm, the high speed shaft clamp can be inserted into the groove of the part and 32mm bearing, and can be installed in places where other clamp cannot be installed 6、EXCELLENT ALUMINUM ALLOY MATERIAL: The collar is made of high quality aluminum, with high hardness, wear resistance and durability Specification Item Type: Shaft Collar Material: Aluminum alloy Center Hole Shape: Round hole Center Hole Diameter: 1/4in Thread: M4 Purpose: Clamping the part to the shaft Outer Diameter: Approx. 32mm / 1.26in Package List 1 x Shaft Collar