1" DR 6 POINT METRIC DEEP IMPACT SOCKET: HEAVY-DUTY DEEP IMPACT SOCKET FOR DEMANDING TASKS. DESIGN: 6-POINT HEXAGON FOR A SECURE FIT. MATERIAL: MADE FROM ROBUST CHROME MOLYBDENUM ALLOY STEEL. FINISH: PHOSPHATE SUNK FOR INCREASED DURABILITY AND CORROSION RESISTANCE. TYPE: 1" DRIVE, DEEP VERSION FOR EXTENDED REACH. SIZE: METRIC MEASUREMENTS. STANDARDS: COMPLIES WITH DIN 3121.