Check the listing for details. 6-Point Impact Socket 38mm Socket 1/2" Drive 2" Long Cr-Mo Steel Phosphated. Color: Black, Condition: New. Listed at 22.75 USD. Made from SCM440 chrome molybdenum steel, the impact socket offers high strength, durability and wear resistance, ensuring long life and performance. Cold forging improves the strength, precision and surface quality of the material, while refining the grains; surface phosphating treatment enhances corrosion resistance, lubricity and wear resistance.The 6-point opening can fit the hexagonal fastener tightly and firmly, preventing slippage or loosening during operation, and can apply maximum torque. The radius corner design increases the contact surface to evenly distribute force to the flat surface of the fastener, preventing nuts and bolts from rounding off under high torque applications and extending tool life.