1" drive to 3/4" drive reducer adaptor Enables the use of 1" air guns and accessories with 3/4" drive impact sockets, etc. DIN standard design for use with a retaining pin and ring Chrome molybdenum for use with power tools Black phosphate finish for easy identification as an impact socket accessory Ring and pin fixing hole on the female end to secure the adaptor to the air gun Ring and pin fixing hole on the male end to securely grip the socket