[ drill] is equipped with a lock ring, which allows 20 degrees of bending when driving in a straight or inclined direction. Effectively prevent damage.[No more restrictions] It can rotate perfectly in narrow spaces and corners.[Magnetic lock] It is equipped with a neodymium permanent magnet to fix the fastening in place - to minimize falling and shaking Simply the sleeve forward to release the drill bit.[High material] It is made of 45 steel, with maximum strength and flexibility. Cordless impact tools for up to 2000 In/.[General] Designed for impact wrenches and wrenches. Used to extend all types of screwdriver , drill , screwdriver , etc.color:Black+silverMaterial:MetalPackage Contents:3 x bit holderOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.