2pcs 1/4 To 3/8 Inch 1/4 To 1/2 Inch Hex Shank Adapter Connecting Rod Male Thread Drill Chuck Adapter Drilling Bit Accessory _x000D_ _x000D_ _x000D_ Features: _x000D_ _x000D_ *Unique patented locking function, breaking the traditional locking method. _x000D_ _x000D_ *Unique thrust bearing torque easy to handle applied translate into greater clamping force. _x000D_ _x000D_ *More effectively prevent loose off at work, so that the cartridge clip holding the tool more reliable. _x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ _x000D_ Product name: Hex Shank Adapter _x000D_ _x000D_ Material: Steel _x000D_ _x000D_ Color: Black _x000D_ _x000D_ Optional Size: 1/4 To 3/8 Inch, 1/4 To 1/2 Inch _x000D_ _x000D_ Suitable for: Prevent the drill chuck from loosening when working _x000D_ _x000D_ Quantity: 2Pcs _x000D_ _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ _x000D_ 2 Hex Shank Adapter _x000D_ _x000D_ _x000D_ _x000D_ Notes: _x000D_ _x000D_ 1.Transition: 1cm=10mm=0.39inch. _x000D_ _x000D_ 2. 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. _x000D_ _x000D_ 3. Please allow slight manual measurement deviation for the data. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_