Features and Benefits:

• Includes sockets from 5/16 in. to 1 in.
• 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
• Black oxide finish and has etchings for identification
• Included in a heavy-duty blow mold case

This is an Impact Socket Set and it has 12-piece. Sockets are 3/8 in. drive and 12 point, deep. Designed to tackle the toughest jobs with solid durability and keeps them pounding job after job.