Features Made of high-quality steel, this chuck has a comfortable surface and excellent metal texture that ensures a reliable grip.Making the output torque becomes larger. This self-tightening chuck is compatible with various drilling and milling machines, lathes, boring lathes, and electric hand tools, making it a versatile tool in any workshop. The keyless design ensures quick and easy tightening and loosening of the chuck with no need for additional tools.offers a quicker and easier chucking and unchucking. The clamping force can increase or decrease according to the required force, making it suitable for various drilling and milling operations. With a unique thrust bearing, the chuck quickly converts handle torque into an even greater clamping force. Features: Good metal texture, comfortable surface, easy to clamp, so that the output torque becomes larger.The unique thrust bearing facilitates the application of torque by the handle into a greater clamping force.Clamping force of this self-tightening chuck would increase according to required force.Keyless design, tightening and loosening is by hand force, which offers a quicker and easier chucking and unchucking.Widely used with various drill machines, milling machines, lathes, boring lathes and electric hand tools. Specifications:Type: B16Material: 45# steelCapacity: 0-13mm(1/2") Inner Diameter: 15.733mm(0.61")Out Diameter: 40mm(1.57")Length: 88mm(3.46") Package Includes:1 x Chuck Package List