The 10mm indexing washer set includes: (8) .004", (8) .008", (8) .016, (8) .024" and (8) .032" washers.
No other indexing washers on the market can give you as much adjustability as this kit. This kit allows you to index your plugs wherever you want them within one thread revolution of the the plug, thus keeping the plug as deep into the combustion chamber as possible.
