Features and Benefits:

• Includes: 6-point fractional standard and deep well sockets 5/16 in. to 3/4 in. and metric sockets from 8 mm to 19 mm, fractional universal sockets 3/8 in. to 3/4 in. and metric universal sockets from 10 mm to 19 mm, external star bit sockets E5 to E16 and internal star bit sockets from T20 to T55, extensions in 3, 5, 10, 15 in. L, 3/8 in. drive universal joint adapts any socket for use in swivel application
• 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 Master Impact Socket Set with 80-piece. Sockets are 3/8 in. Drive. Set Includes the most popular 3/8 in. drive metric and SAE impact sockets in one convenient set.