Sunex 8844 3/8-Inch Drive 13/16-Inch Universal Spark Plug Socket, Fully Polished, CR-V  9/16-Inch - 13/16-Inch, 4-Piece All four sized spark plug sockets in one convenient se 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 SAE inches-9/16-Inch, 5/8-Inch, 3/4-Inch, 13/16-Inch