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
• The design drives the side of the fastener instead of the corner
• Heavy duty blows molded storage case

This is an Impactact socket. It is 8 mm. It is 3/8 in. drive and 6 points.