Features and BenefitsSet contains seven of our most popular impact sockets used on truck wheel fastenersMade of high quality alloy steel (chrome-molybdenum)Tested to the highest specifications to deliver outstanding performance at the competitive costPackaged in a molded storage caseLifetime WarrantyGrey Pneumatic sockets are designed for professional tool users. They are engineered specifically for use with impact tools using the most up to date industrial specifications. This features our high torque drive. This limits the amount of wear on the corners of the fastener and the socket. It also improves the strength of the socket transfers increased torque to the fastener and allows easier access to tight areas. Set contains the following sizes: Standard 4 Point Square: 13/16 ; Standard: 1-3/16 ; Thin Wall Deep: 1-1/16 1-1/8 1-1/4 ; Metric Deep: 33mm. Features Item: Truck Wheel Set 1 D 7pcs.