Feature:-Unique patented locking function, breaking the traditional locking methods.-After ratcheting, locking components mounted on the rear sleeve, locking circumferential length, more effective in preventing loose removal, the collet is more reliable when gripping means.-Good metal textured, comfortable sweatshirt.-Torque thrust bearing unique easy grip exerted translates into greater clamping force.-Range: suitable for 1050W power more drill impact. Specifications:Product Name: Drill ChuckMaterial: High Speed SteelColor: Black & SilverLength: Approx. 85mm/3.34"Shank Diameter: Approx. 6mm/0.23"Clamping Range: 0.8-10mm/0.031"-0.39"Quantity: 1Pc Package Included:1x Drill Chuck FAQs: 1. Is there a tracking number for my item? Yes, we ship every order with their tracking number, and you can see the status of your shipment on the respective website. 2. Is the product the same as the pictures? Yes, all photos are real. We took these photos ourselves. 3. What size can fit me? We suggest you look at our size suggestion chart below and our product size chart if you have a normal figure. If you have a special figure, please fit in (tell us your height and weight, bust, waist, hip size). 4. I am a seller, I would like to buy many pieces of the item, what is the price? Hi, thank you for your inquiry, if you want to buy large quantity, please send to us, we will give you the best price, thanks!