The standard industrial chuck is a good metal structure, a pleasant surface, easy to clamp, so that the output torque increases The unique axial bearing facilitates the laying of torque by the handle in a greater clamping force The clamping force of this keyless chuck would increase according to the force required The keyless design loosens and untightens by hand, this which provides faster and easier tightening and loosening Widely used in various drills, milling machines, lathes, drills and electric hand tools The keyless chuck is a device handy clamp to accommodate tools such as drill bits and bits. This attaches by hand (no wrench required) to the spindle of a drill press , a cordless drill, a compact screwdriver or a hammer drill. Practical and reliable. The advantage of self-tightening chucks is in the rapid change of drill bits. This is possible, because the tightening is done by hand without a chuck key. Thanks to modern technology, it is possible that despite low hand strength the insertion tool is always tight and secure. Specifications: Type: B16. Material: 45 steel. Capacity: 0-16mm Contents: 1 self-tightening chuck.