The standard industrial chuck is a good metal structure, a pleasant surface, easy to clamp, so that the output torque increases Unique axial bearing facilitates torque laying by the handle in greater clamping force The clamping force of this keyless chuck would increase depending on the force required Keyless design loosens and loosens by hand, allowing for faster and easier tightening and loosening Widely used in different drills, milling machines, lathes, drills and electric hand tools Self-tightening chuck. Keyless chuck with SDS-plus adapter for use in combination with an SDS plus machine. The keyless chuck is a handy clamping device to accommodate tools such as drill bits and bits. This attaches by hand (no spanner required) to the spindle of a drill, cordless drill, compact screwdriver or hammer drill. Convenient and reliable. The advantage of self-tightening chucks lies in the quick change of drill bits. This is possible, because the tightening is done by hand without a wrench. Thanks to modern technology, it is possible that despite low hand strength, the insertion tool is still tight and secure. Specifications : Type: B16. Material: 45 steel. Capacity: 0-16 mm Contents: 1 keyless chuck.