14mm Spark plug indexer tool

Designed for 14mm spark plugs, this index tool allows the serious performance engine builder to specify the location of the ground electrode for maximum flame front generation by using different thickness spark plug washers. The tool is knurled for hand held use or can be mounted in a vise on the machined flats. Constructed of billet aluminum with a gold anodized finish and labeled increments for aligning ground electrode. Made in the USA.