This drill chuck is suitable for the drill whose power is 1050w. Comfortably tighten with one hand with the exclusive single sleeve design. Constructed with plastic and metal for superior durability. Multiply the utility to perform regular drilling work. A great accessory for all your drilling tasks. Our products are lightweight, practical, simple, efficient and high quality, providing convenience for home improvement, maintenance and measurement. We carefully design each product to make your work more efficient. Specification: Chuck Size Thread: 3/8"-24UNF Clamping Diameter Range: 0.8mm-10mm Suitable for 9.3mm Arbors Material: Plastic + Metal Chuck Diameter: 40mm Chuck Height: 50mm Package Includes: 1 x Chuck SDS Adapter Practical Constructed with plastic and metal for maximum durability. With the exclusive unique design, you can press with one hand, which is very convenient. 0.8-10mm 0.8-10mm drills fit in it, suitable for 1050W power on an impact hammer drill. New and old models are shipped randomly The old model has a hexagonal shank, the new model does not have a hexagonal shank Delivery quantity: 1 piece Product color: black Product size: 4.28 * 8.5cm Note: manual measurement, please allow an error of 1 - 3cm!!! Yeuri