This 13/16" spark plug socket by ToolPRO is an ideal addition to any socket set. Made from high quality durable chrome vanadium steel and finished in a high polish easy to clean finish they are protected from corrosion and abrasion damage. The 6 point socket design allows for easy and damage-free removal of spark plugs and has a rubber retainer inside to grip and lift spark plugs out of deep wells such as in DOHC applications. This socket is suitable for 1/2" drive ratchets and breaker bars but is not suitable for impact applications.