Package Contents: Includes 1 x 1/2-inch S2 steel impact driver, 1 x impact driver adapter, 10 x screwdriver bits, and 1 x storage case Function: It can be used to loosen or remove tightly fastened or rusted screws or bolts without damaging them. Suitable for motorcycle work or engine repair. Easy to Use: Simply strike the top of the tool with a hammer; the drive shaft will rotate in the desired direction upon impact. It can forward and reverse the direction of rotation. Durable: The impact driver bits are made of high-alloy S2 steel, making them sturdy and difficult to break. The impact driver itself has a corrosion-resistant chrome finish. 100% Satisfaction Guarantee: Enjoy a smooth and hassle-free return service within one month. For any questions, please feel free to contact us; we will be there to help you.