Features 1、[FOR SCREW PROCESSING] 1/2in reversible impact driver set for loosening rusted or frozen screws, often used in home or car repairs. 2、[EASY ADJUSTMENT] Adjust to the right to tighten the screw or left to loosen the screw, engraved with the letter L and R for easy identification. 3、[EASY INSTALLTION] Insert the bit into the hex bit adapter chuck and hit the end of the impact screwdriver tool with a hammer to install. 4、[DURABLE MATERIAL] Using excellent tungsten chrome steel material, which has high hardness, wear resistance and high torsion. 5、[WITH 12PCS BITS] Equipped with 12pcs screwdriver bits, with slot, hex and cross types, can meet more maintenance needs. Specification Item Type: Impact Driver Set Material: Tungsten Chrome Steel Handle Length: Approx. 145mm / 5.7in Handle Interface: Square head 1/2in Conversion Head: Square head 1/2in to hex head 8MM Bit: Hex connector 8MM Slot Bit: 5MM 6MM 8MM 9MM Hex Bit: 4MM 5MM 6MM 8MM Cross Bit: PH1 PH2 PH3 PH4 Package List 1 x Impact Driver Handle 1 x Impact Driver Adapter 12 x Bits 1 x Storage Box