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.