Features ✅1. High Quality Material: Our keyless drill chuck is made of high-quality #45 steel, ensuring durability and strength for long-term use. The mandrin perceuse comfortable surface provides a convenient clamping experience. ✅2. Enhanced clamping force: Our keyless chuck adopts a unique thrust bearing design, mandrin can effectively convert torque into greater clamping force. The thread design further facilitates operation and makes your work more efficient. ✅3. Keyless design: Say goodbye to cumbersome keys, our keyless chuck allows you to tighten and loosen it manually, no need for extra tools with the mandrin by your side. This innovative design saves you time and energy. ✅4. Adjustable clamping force: The clamping force of our keyless chuck can be easily adjusted according to your drilling needs. Mandrin perceuse versatility ensures optimal performance in a variety of applications, delivering precise and reliable results. ✅5. Versatility: Our keyless drill chuck is not limited to one type of machine. It can be used for mandrin sds, mandrin, various drilling machines, milling machines, lathes, boring machines, manual power tools. The mandrin perceuse versatility makes it a must-have tool for any professional or DIY enthusiast. Features: The metal texture is good, the surface is comfortable, easy to clamp, and increases the output torque. Unique thrust bearings help convert torque exerted by the handle into greater clamping force. The clamping force of this self-tightening chuck increases depending on the force required. Keyless design allows manual tightening and loosening, making clamping and loosening faster and easier. Widely used in various drilling machines, milling machines, lathes, boring machines and electric hand tools. Specifications: Type: B16 Material: 45# steel Capacity: 1-13 mm (1/2 inch) Inner diameter: 15.733 mm (0.61 in) Outside diameter: 40 mm (1.57 inches) Length: 88mm (3.46 inches) Package List