Features and Benefits:

• 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.
• Design also avoids rounding of rusted or damaged fasteners.
• Black oxide finish and has etchings for identification.

This is an impact socket and it is 8mm. It is 1/4" drive and 6 point, deep design. Designed to tackle the toughest jobs with solid durability and keeps them pounding job after job.