Professional adapter, and solid. Electric impact drill rotary drill head. This can be replaced the drill bit. It has strong abrasion resistance, easy operation. Suitable for use by the professional woeker or DIY enthusiast. Specifications: Item Type: Drill Bit Adapter Color: Silver Material: Steel Size: 10.5cm Package Contents: 2 * Drill Bit Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.