Item Description:Features1. Our drill chuck adapter has three-jaw chunk design with a fixed range of 1.5-10 mm(1/16 inch-3/8 inch), which can firmly secure various twist bits, step bits, paddle bits and some circle saws, it can bring you a convenience when you are working2. Good metal texture, comfortable coat surface, easy to clamp, so that the output torque becomes larger.3. Beautiful and practical surface concave and convex design, so that the front and rear jackets can effectively cooperate and reduce the shaking.SpecificationMaterial: Tungsten SteelColor: See PoPackage Includes:1 x AdapterItem Specification:DIY Supplies: WoodworkingType: Center Drill BitUse: Metal Drilling