Features 1、Alloy Steel: Adopt high quality alloy steel material, safe and environmental protection, strong and durable. High working efficiency. 2、Positive and Negative Rotation Regulable: Press the black head inward to adjust the positive and negative rotation. To the left is to loosen the screw, to the right is to tighten the screw. 3、Removable Head: The head of our impact screwdriver is detachable and can be attached to either a matching drill or a socket for a variety of uses. 4、A Variety of Bits: Impact grade bits with milled tips for precise fit. Equipped with 12 screwdriver bits to meet your replacement needs for easy replacement and use. Also, the impact driver has corrosion resistant and a non slip knurled grip. 5、Applicability: Ideal for loosening or removing firmly tightened or rusted screws for motorcycle work or engine repair. Specification Item Type: 12Pcs Steel Impact Screwdriver Driver Set Material: S2 Alloy Steel Use: For stubborn screws System: Metric system Package List 1 x Handle 1 x Connector ( Already Mounted on The Handle) 10 x Screwdriver Bit 1 x Storage box