Features:_x000D_ _x000D_ Good metal texture, comfortable surface, easy to clamp, so that the output torsion becomes larger. _x000D_ The unique thrust bearing facilitates the application of torsion by the handle into a greater clamping force. _x000D_ Clamping force of this self-tightening chuck would increase according to required force. _x000D_ Keyless design, tightening and loosening is by hand force, which offers a quicker and easier chucking and unchucking. _x000D_ Widely used with various drill machines, milling machines, lathes, boring lathes and electric hand tools._x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: 45# steel _x000D_ Chuck Capacity: 1-13mm(1/2") / 0.04-0.5in_x000D_ Chuck Inner Diameter: Approx. 15.733mm / 0.6in_x000D_ Chuck Out Diameter: Approx. 40mm / 1.57in_x000D_ Chuck Length: Approx. 88mm / 3.46in_x000D_ Arbor Type: MT2-B16 _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 1 x Chuck & Arbor _x000D_ _x000D_ _x000D_ Note:_x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering