Expert Quality, 6 point sockets forged from chrome molybdenum hardened, tempered and chemically blacked for corrosion protection. Supplied with pin and ring. These sockets are for use with air, electric or manual impact wrenches. Packed in polythene bag with barcode.Always use a ring and pin to secure 3/4″ square drive impact sockets to the output shaft of the impact wrench. All Draper 3/4″ square drive impact socketry is supplied with a ring and pin as standard.Draper Expert HI-TORQ is a registered trademark of Draper Tools Ltd.