1、【Premium Material】: Made of quality zinc alloy material, corrosion resistance, not easy to rust, can provide long service time. 2、【Fine Durability】: High strength and hardness, small size, wear resistance and with fine durability. 3、【Accurate】: Compact in size, easy to be used and with a high centering precise as well as a large clamping ranges. 4、【Easy to Use】: The chuck is equipped with special locking structure, save effort when tightening, very convenient. 5、【Functional Design】: Innovative design, self-centering, widely used for woodworking lathe. 6、【Three Specifications】: Three specifications are optional, you can choose chuck-drill connecting rod, 3-Jaw chuck and connecting rod, 4-Jaw chuck and connecting rod according to your demands. 7、【Wide Ranges of Applications】: It is mainly used in machine tool accessories,which is suitable for clamping a variety of industrial parts.