Item Type: Shaft Clamping Hub_x000D_Product Material: Aluminum_x000D_Product Model: 3309-0016-0006_x000D_Thread: M4_x000D_Center Hole: Approx. 6mm / 0.2in_x000D_Length: Approx. 14mm / 0.6in_x000D_Hex Drive: Approx. 3mm / 0.1in_x000D_Size: Approx. 6mm / 0.2in_x000D_16mm / 0.6in_x000D_32mm / 1.3in_x000D__x000D_0.7mm / 0.03in_x000D_14mm / 0.55in_x000D__x000D_8mm / 0.31in_x000D_1mm / 0.04in 1The hub of choice for high?speed applications without worrying about shaft damage or loss of fixing screws. 2The clamping mechanisms used to fix the hub to the shaft are completely isolated from each other. 3The double clamping bolts can be tightened to clamp it on the shaft without deforming the hole required to install the component to the hub. 4The hub can be fixed to gears, sprockets, pulleys or wheels, because the clamping mechanism can work no matter what the hub is connected to. 5Small size, easy to carry and store, convenient to use and with good performance.1 x Shaft Clamping Hub