1、EXCELLENT ALUMINUM ALLOY MATERIAL: The collar is made of good quality aluminum alloy for high hardness, wear resistance and durability 2、INDEPENDENT THREAD HOLE FIXING MECHANISM AND CLAMPING MECHANISM: The parts are fixed by clamping, the advantage of this fixing method is that 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、NON 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 STEPS: 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、INSERT INTO PART GROOVE: Since the fixing mechanism and the clamping mechanism are completely independent of each other, the high speed shaft clamp can be inserted into the groove of the part and can be installed in places where the other clamp cannot be installed 6、BALANCED WEIGHT AND VOLUME: As with all high load shaft clamps, this high load shaft clamp is balanced in weight and volume based on the center hole, so can effectively avoid problems of centrifugal force and vibration caused by unbalanced parts mass and volume in high speed applications. Compared with other series of shaft clamps, the clamping length of high load shaft clamps is much longer 7、INCREASED CLAMPING FORCE AND PRESSING AREA: Greatly increases the number of shafts in contact with the center hole surface, increasing the clamping force and pressing area, providing greater support against heavy radial loads 8、PROVIDE FIRM CLAMPING: With one clamping bolt on each side, a balanced two bolt setup will create a balanced and firm clamping force on the shaft, to ensure that rotating shaft mounted components do not move or loosen Item Type: Shaft Collar Material: Aluminum alloy Center Hole Shape: Hex hole Center Hole Diameter: 1/2in Thread: M4 Purpose: Connect the shaft column by clamping without causing any damage to the fixed parts 2 x Shaft Collar