High material: made of chrome vanadium steel, with maximum strength and flexibility. Cordless impact tools for up to 2000 In/.Magnetic drill head holder: It has a ball head for installing the screws of portable electric drill. Even in inaccessible , the drill chuck of the machine will become an obstacle.Fine technology: The solid machined parts make the drill and the drill tip easy to enter and exit. Even at high speed, the magnetic force will tightly hold the drill bit or tip, the effect is best at low speed. drill bit: It is designed with a ring and can be bent by 20 degrees. It is used for straight drilling or oblique drilling. Effectively prevent damage.Universal bit holder: designed for impact drivers and wrenches. It is used to extend screwdriver , drill , screwdriver , etc.Material: Chrome Vanadium Steelcolour: Mixed colorsPackage Contents:5 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.