These Draper HI-TORQ® 6-point impact sockets are forged from hardened chrome molybdenum. Black phosphate finish for corrosion protection. Includes sizes 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 27mm and a 3/8" (F) x 1/2" (M) socket converter. For use with electric or pneumatic impact wrenches with a 1/2" drive. Supplied inside an EVA drawer insert tray, 168 x 270 x 30mm. It is suitable for use in Draper and Draper Expert tool chests and other manufacturer's similar products. Features and BenefitsManufactured from chrome molybdenum steel, chemically blackened for corrosion protection6-point Draper Hi-TORQ® impact socketsFor use with electric or pneumatic impact wrenches with a 3/8" driveSizes 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 27mmIncludes 3/8" (F) x 1/2" (M) socket converterSupplied inside an EVA drawer insert tray, 168 x 270 x 30mmSuitable for use in Draper and Draper Expert tool chests and other manufacturers Contents 15 x 1/2" Sq. D