【4 JAW DESIGN】: 4-jaw design, high working efficiency, compact size, easy to use. It has a large clamping range. Accurate accuracy, high efficiency and wear resistance. Independently adjusted center, suitable for special processing with superior gripping force. 【ZINC ALLOY LATHE CHUCK】: Made of premium zinc alloy for optimal strength and durability. Both sides of the chuck are hardened for longer life and better sealing. Independently adjusted center, suitable for special processing with superior gripping force. 【GOOD WEAR RESISTANCE】: The 4-jaw lathe chuck is made of high quality material, wear-resistant, strong and durable. Outer Diameter: 12-65mm / 0.5-2.6inch.Internal Diameter: 1.8-56mm / 0.1-2.2inchGood wear resistance, strong rust and corrosion resistance, stable performance. 【LONG CLAMPING RANGE】: The is capable of achieving a long clamping range, more practical and convenient. The four claws can be synchronized and automatically centered. Generally, there is no need to correct