Features 1、It can be used for pneumatic tools, electric tools and manual tools with hexagonal chuck, and with the auger, grinding and screwdriver bit for clamping, so as to realize multiple functions of one tool. 2、Three-jaw collet structure, strong, stable and fast clamping force, 3、Quickly convert your quick change hex shank driver into a drill! 4、It can be used in the fields of craft manufacturing, DIY creation and production manufacturing. 5、Aluminum alloy + carbon steel material, high hardness, wear - resistant Specification Features: It can be used for pneumatic tools, electric tools and manual tools with hexagonal chuck, and with the auger, grinding and screwdriver bit for clamping, so as to realize multiple functions of one tool. Three-jaw collet structure, strong, stable and fast clamping force Quickly convert your quick change hex shank driver into a drill! It can be used in the fields of craft manufacturing, DIY creation and production manufacturing. Aluminum alloy + carbon steel material, high hardness, wear - resistant Specification: Material: Aluminum alloy, carbon steel Size: as the picture shows Weight: Approx.20g~45g/0.7oz~1.6oz Model(Optional) Hex shank Clamping range Material H01334 6.35mm 0.3-3.6mm Nickel - aluminum alloy + carbon steel H01335 6.35mm 0.3-3.6mm Black aluminum alloy + carbon steel H01455 6.35mm 0.3-6.5mm Black aluminum alloy + carbon steel H01554 6.35mm 0.3-6.5mm Nickel - aluminum alloy + carbon steel Package list: 1 x Hex Shank Drill Chuck Package List