... 2" Air Impact Wrench (twin Hammer Type) 2)Common applications are tire changes, heavy automotive and truck work. DESCRIPTION:XF-231 Air Impact Wrench*square drive ... minSPECIFICATION :1/2" air impact wrench set*1/2" air impact wrench*1pc extention bar*1pc mini oiler*1pc air nipple*10pcs sockets ... set;socket size:9,10,11,13,15,17,19,22,24,27mm Twin Hammer Type Air Impact Wrench