Features and Benefits:

• Forged from the finest chrome molybdenum alloy steel - the best choice for strength and durability
• Radius corner design - to extend the life of fasteners
• Design drives the side of the fastener not the corners
• Provides increased strength, but also avoids rounding of rusted or damaged fasteners

This is an impact socket. It is 5/8 in. It is 1/2 in. drive.