Features 1,Good metal texture, comfortable surface, easy to clamp, so that the output torsion becomes larger 2,The unique thrust bearing facilitates the application of torsion by the handle into a greater clamping force 3,Clamping force of this self-tightening chuck would increase according to required force 4,Keyless design, tightening and loosening is by hand force, which offers a quicker and easier chucking and unchucking 5,Widely used with various drill machines, milling machines, lathes, boring lathes and electric hand tools Specification Features: Good metal texture, comfortable surface, easy to clamp, so that the output torsion becomes larger. The unique thrust bearing facilitates the application of torsion 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: Material: 45 steel Chuck Capacity: 1-13mm(1 or 2") or 0.04-0.5in Chuck Inner Diameter: Approx. 15.733mm or 0.6in Chuck Out Diameter: Approx. 40mm or 1.57in Chuck Length: Approx. 88mm or 3.46in Arbor Type: MT2-B16 Package Includes: 1 x Chuck and Arbor Note: 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 Package List Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.