This is an Impact Socket Adapter and it is 3/8 in. Female x 1/2 in. Male. It is a commonly size used for repairs. Finish is black oxide.
- Designed to tackle the toughest jobs with solid durability and keeps them pounding job after job
- Forged from the finest chrome-molybdenum alloy steel, the best choice for strength
- Radius corner design extends the life of fasteners; design drives the side of the fastener instead of the corner
- Has etchings for identification
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