Features: This drill chuck is made of high quality plastic and chrome-vanadium steel, high hardness, durable in use. Good metallic and comfortable coat surface. Jaws special treatment, with good abrasion resistance. Keyless chuck finger-tightens for easy changes. Quick-change SDS shank for electric hammer. Accuracy is accurate and reliable. Specifications: Material: Plastic (body), Chrome-vanadium steel (handle) Shank length: 46mm / 1.81inch Head Diameter: 6mm / 0.24inch Hole Diameter: 12mm / 0.47inch Capacity: 2-13mm / 0.08-0.51inch Total Length: Approx. 12.4cm / 4.88inch Weight: Approx. 257g Package Included: 1 x Drill Chuck 1 x SDS Adapter Note: Only chuck and SDS adapter, no other stuff included.