Features: Tough body shaved from super alloy.Precision claws allow for precise work without crumbling with the axis.Compatible with chuck allowable range 0.08 - 0.5 inches (2 -Includes 1 chuck key compatible with Camellia model drill chuck.Patented.Specifications: Size: 0.5 inches (12.7 mm), A: 3.1 inches (80 mm), B: 1.7 inches (42.8 mm), Weight: 17.6 oz (500 g).