Features and Benefits:

• Fully polished chrome vanadium alloy steel for durability
• Universal joint design for easy access in confined areas
• Rubber inserts hold spark plug securely during installation and removal
• Includes convenient blow molded case
• Sizes: 9/16", 5/8", 3/4" and 13/16"

This is a universal spark plug Socket set. It has 4-Piece. It is 3/8 in. drive.