Instructions for use:The head is aligned with the screw and directly hits the rear part of the impact batch with a hammer. The front batch head will automatically rotate. The question section can adjust the forward and reverse rotations, and the and lower screws can be used.Features:Heavy duty material: The screwdriver bits are made from steel, which is heavy duty, impact resistant, wear resistant and durable. All the tools has high hardness.Use: You can apply to loosen OR tightening fasteners with this must-own tool.Color: SilverMaterial: SteelComfortable grip: Non- grip handle, it is comfortable to hold and operate.Good performance: Impact force helps loosen rusted or frozened screws without damaging.Portable: Easy to carry and use, all the tools are stored with a carry case.Condition:Brand NewProduct Name:Impact Screwdriver Set7pcs: 2 x 8x70mm slotted bit, 1 x 8x35mm slotted bit, 2 x 8x70mm crossed bits, 1 x 8x35mm crossed bit, 1 x impact screwdriverPackage Contents:1 set Impact screwdriver kitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.