Features Enhanced Torsion--- Good metal texture and comfortable surface allow for easy clamping, resulting in increased output torsion for improved performance. Greater Clamping Force--- The unique thrust bearing enables the application of torsion by the handle, transforming it into a greater clamping force for secure and reliable operation. Quick and Easy Operation--- With its keyless design, tightening and loosening is done effortlessly by hand, providing a convenient and efficient chucking and unchucking experience. Wide Compatibility--- Compatible with a range of drill machines, milling machines, lathes, boring lathes, and electric hand tools, making it a versatile accessory for various industrial applications. Adjustable Clamping Force--- This self-tightening chuck adjusts its clamping force according to the required force, ensuring optimal performance for various applications. 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# steelChuck Capacity: 1-13mm(1/2") / 0.04-0.5in Chuck Inner Diameter: Approx. 15.733mm / 0.6inChuck Out Diameter: Approx. 40mm / 1.57inChuck Length: Approx. 88mm / 3.46inArbor Type: MT2-B16 Package Includes:1 x Chuck & 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