Features: High quality for professional use It has a large clamping range 4-jaw design, Compact size, easy to use Made of high quality material, wear-resistant, strong and durable. High quality 4-jaw chuck has been widely applied Specification: Material: zinc alloy Weight: 180 grams Outer diameter: 12-65 mm Inner diameter: 1.8 -56 mm Packing includes: 1 x 4 Jaw Lathe Chuck Note: Please allow 0.1-1mm differences due to manual measurement