Quantity: One PieceFour-jaw Design: Four-jaw design, high working efficiency, small size, convenient operation, large clamping range, high precision, high efficiency, wear resistance, independent center adjustment, suitable for special processing grip.Zinc Alloy Lathe Chuck: Made of high quality zinc alloy for strength and durability. Both sides of the collet are hardened for longer life and better sealing. Independent center adjustment for special machining with excellent grip.Good Wear Resistance: The four-jaw lathe chuck is made of high quality material, wear-resistant and durable. Outer Diameter: 12-65mm/0.5-2.6in Inner Diameter: 1.8-56mm/0.1-2.2in Good wear resistance, rust and corrosion resistance, stable performance.Long Clamping Range: A long clamping range can be achieved, which is more convenient and practical. The four claws can be aligned synchronously and automatically. 'Install.Main Use: Mainly used in small metal lathes, very convenient to use, each jaw can be adjusted independently and reversible, with strong clamping force. Mainly used for small metal lathes.