[ drill] is equipped with a lock ring, which allows 20 degrees of bending when driving in a straight line 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 powerful neodymium permanent magnet to fix the fastening in place - to minimize falling and shaking the sleeve forward to release the drill bit. [High quality material] It is made of 45 steel, with maximum strength and flexibility. Cordless impact tools for up to 2000 In/LBS. [General] Designed for impact wrenches and wrenches. Used to extend all types of screwdriver bits, drill bits, screwdriver bits, etc. color:Black+silver Material:Metal Package Contents: 3 x bit holder Only the above package content, other products 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.