used in machine tool fittings and is suitable for clamping various industrial parts. 【Premium Material】: Made of quality zinc alloy material, corrosion resistance, not easy to rust, can provide long service time. 【Fine Durability】: High strength and hardness, small size, wear resistance and with fine durability. 【Accurate】: Compact in size, easy to be used and with a high centering precise as well as a large clamping ranges. 【Easy to Use】: The chuck is equipped with special locking structure, save effort when tightening, very convenient. 【Functional Design】: Innovative design, self-centering, widely used for woodworking lathe. 【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. 【Wide Ranges of Applications】: It is mainly used in machine tool accessories,which is suitable for clamping a variety of industrial parts. Specifications: Material: zinc alloy  Types: Connecting Rod, Connecting Rod'Three Jaw Chuck, Connecting Rod'Four Jaw Chuck (optional) Package size: Connecting Rod: 50 * 12 * 12mm / 1.97 * 0.47 * 0.47in Connecting Rod'Three Jaw Chuck: 60 * 50 * 50mm / 2.36 * 1.97 * 1.97in Connecting Rod'Four Jaw Chuck: 60 * 50 * 50mm / 2.36 * 1.97 * 1.97in Package weight: Connecting Rod: 31g / 1.09ounce Connecting Rod'Three Jaw Chuck: 220g / 7.76ounce Connecting Rod'Four Jaw Chuck: 225g / 7.94ounce Packing List (E22732-1): 1 * Connecting Rod OR Packing List (E22732-2): 1 * Connecting Rod 1 * Three Jaw Chuck 2 * Short Sticks OR Packing List (E22732-3): 1 * Connecting Rod 1 * Four Jaw Chuck 1 * Wrench