Features and Benefits:

• Forged from high quality chrome-molybdenum alloy steel
• Each impact socket features a radius corner design, causing the socket to grab the sturdy wall of the fastener instead of grabbing the corners
• Packaged in a durable heavy duty blow mold case for convenient storage and transport
• Provides increased strength, but also avoids rounding of rusted or damaged fasteners

This is an impact socket set. It has 19 pieces. It is 1/2 in. drive and deep design. Design makes sockets strong and durable.