*** IN STOCK SHIPS TODAY *** RBS makes it easy for a racer wanting to go from dual spark plugs to a single spark plug on their Hemi engine.
These are made from billet alum. with a lightning pocket machined to keep the plugs lightweight and have a anodized black finish.
Simply pull the plug tube out of the valve cover slide this plug in install the snap ring and your done.
These are sold in sets of eight.