McMaster 5550A14 Impact Square Drive Size Adapter, 1" Female x 3/4" Male

Convert from one square drive size to another. The female side of the adapter attaches to your wrench; the male side to your socket. These adapters are made to withstand the high torque and force of impact tools.

1" Square Drive—3/4", 1", and 1 1/2" square drive size adapters require a locking retainer on the female end. Use with an impact wrench that has a pin-style socket retainer, or use a socket retaining ring with tools that have a hole- or hole-and-ring style socket retainer.