【Domestic Brand Longsafe Shock Driver】 High-Quality Materials: Made with heat-treated alloy steel, providing durability and resistance to impact and vibration. Multi-functional: Interchangeable sockets, compatible with 1/2DR sockets. Bi-directional Rotation: Supports both clockwise (R) and counter-clockwise (L) rotation. Set to (L) for removing screws. Easy to Use: Case size 18.5cm x 7cm x 3.5cm, bit material is chrome vanadium steel. Package Contents: Shock driver body x 1 Phillips bits 8 x 35mm 3 pieces (PH1+PH2+PH3), 8 x 70mm 1 piece (PH2) Slotted bits 8 x 35mm 5 pieces (SL4+SL5+SL6+SL9+SL9), 8 x 70mm 1 piece (SL9) Hex bits 8 x 35mm 2 pieces (H5+H6) Wide Range of Applications: Can remove stripped screws, broken screws, rusted screws, and seized screws of M3 size or larger. How to Use: Assemble the impact driver and align it with the screw you want to remove, then strike the body with a hammer. The impact is converted into strong rotational force, allowing you to remove seized screws. Compatible screws are M3 or larger. This set comes with a storage case for convenient portability and is useful for various applications such as car repairs and machinery repairs.