Practical Drill Chuck Adapter 2-13mm For Drill Bit Chuck 1/4 Hex Shank 3/8-24UNF Keyless Chuck Locking Reliable Item Details: * new and high quality. *Color: black *Material: steel *Clamping range: 2-13mm *Mount type: 3/8"-24UNF *Keyless Chuck Size: approx. 70 x 42mm *Unique locking function, breaking the traditional locking method, after having ratchet locking pieces mounted on the rear cover, the locking perimeter longer, more effectively prevent loose off at work, so that the cartridge clip holding the tool more reliable. *Good metal texture, comfortable coat for . *Unique thrust bearing torque easy to handle applied translate into greater clamping force. Package Contents: 1*Drill Chuck Adapter Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.