Teng Tools 1/2" Hex Impact Socket DINDesigned for professional use with power tools, these hex impact sockets handle fastenings with hexagon holes, including in hex or grub screws. Built to DIN standards, they feature a retaining pin and ring system for secure attachment and long lasting durability. Key Features: DIN standard design with retaining pin and ring for secure use Chrome molybdenum construction for high torque applications Black phosphate finish for quick and easy size