Features and Benefits:

• Chrome Molybdenum alloy steel for long life
• Features a radius corner design, resulting in less wear on the fastener
• Fully guaranteed
• Finish is black oxide
• Provides increased strength, but also avoids rounding of rusted or damaged fasteners

This is an impact socket. It is 17 mm. It is 3/4 in. drive with a hex head. Design makes socket strong and durable.