Milwaukee 48-22-9556 3/8" Drive 18MM Spark Plug Socket

The 3/8" Drive 18mm 6-Point Spark Plug Socket has a durable dual-material rubber retainer designed to keep a more secure fit within the socket while firmly holding spark plugs so they aren't dropped or damaged. Precision knurling on the outside of the socket gives better control when hand tightening or loosening. Both the socket and retainer resist the harsh chemicals commonly found in the garage. Stamped size markings make the socket size easy to identify. An external hex at the base of the socket fits a 20mm wrench for added control.