Features [Chuck Chuck Kit] This is a 1-10mm self-adjusting B12 chuck, which is equipped with an MT2 to B12 chuck for easy connection to the device. [High clamping force] The clamping force of this self-adjusting chuck increases according to the required force. The unique thrust bearing supports torque and thus ensures maximum clamping force. [Keyless Design] Thanks to its keyless design, this manual chuck allows for quick and effortless tightening and loosening by hand, increasing ease of use. [Superior Performance] This self-adjusting chuck is made of carbon steel and has high strength, which provides high efficiency and ensures long-term reliable use. [Wide Application] This chuck can be used in various drills, milling machines, lathes, drills and power hand tools. Specification: Item Type:Chuck Material: high carbon steel Chuck Specification: 1-10mm B12 Chuck Chuck Specification: MT2-B12 Package List: 1 x Drill Chuck 1 x Gazebo 1 x Storage Box Package List 1 x Drill Chuck 1 x Arbor 1 x Storage Box