Features: * Material: Made of high carbon steel material, anti-corrosion, not easy to rust, durable and sturdy. * Features: High strength and hardness, small size, comfortable to wear. * Compact size: The compact handle is small in volume, easy to use .* Accurate: with high centering accuracy and a large clamping range. Specifications: Material: high carbon steel Color: silver Connecting rod size: 3.17mm 5mm 8mm Connecting thread: M12*1mm Maximum clamping diameter of the positive jaw: 20mm; Maximum inner diameter of the hole that can be clamped by the anti claw: 35mm; Maximum outer diameter of the clamping jaw: 48mm. Application : three jaw design, self-centering, widely used for woodworking lathe. Package Contents: 1 x Connecting Rod 1 x Wrench or 1pc x Three Jaw Chuck 1 x Connecting Rod 1 x Wrench 2pcs x Short Sticks Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.