GUNSONS COLORTUNE ADAPTOR KIT- 14MM TO 12MM
G4055B- GUNSONS COLORTUNE ADAPTOR KIT- 14MM TO 12MM
This kit converts the thread on Hi Gauge Compression Tester to fit most popular sizes of spark plugs fitted to most modern and classic cars, motorcycles, garden machinery and boats. This adaptor will enable you to use the Gunsons colourtune or compression gauge in 12mm spark plug holes. The later Alloy heads made for minis all have a 12mm spark plug hole.