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
• Provides increased strength, but also avoids rounding of rusted or damaged fasteners
• Black oxide finish and markings etched on socket

This is an impact socket. It is 3/16 in. It is 3/8 in. drive.