General description This VEVOR KP2-3/4 Lathe Chuck is a 4-jaw, self-centering tool designed for precision machining and grinding applications. With a diameter of 2.75 inches, it is crafted from high-strength #45 material, ensuring exceptional durability and corrosion resistance. Its streamlined design enhances operational efficiency, making it user-friendly and easy to master. Technical specifications Model: KP2-3/4 Chuck Outer Diameter: 2.75 inches / φ70 mm Clamping Range (Inner): 1.18-1.85 inches (30-47 mm) Chuck Internal Thread: 1*8TPI Support Range (Outer): 1.5-2.24 inches (38-56 mm) Outer Diameter Runout: ≤0.15 mm Test Bar Radial Runout: ≤0.40 mm at a distance of 50 mm Test Ring End Face Runout: ≤0.15 mm Surface Treatment and Color: ≤Ra1.6, chrome-plated natural color Main Material: 45# Net Weight: 3.2 pounds / 1.47 kg Product Dimensions: φ70 x 65 mm Compatibility and accessories 1 x T-Wrench 1 x Cone Screw 1 x T-Handle Wrench 1 x M33*3.5 Adapter 1 x Instruction Manual Usage This