Expert Quality, brass adaptor with an internal thread size of 14 x 1.25mm and external thread sizes of 10 x 1.00mm and 12 x 1.25mm. Converts conventional petrol compression testers to be compatible with M10 and M12 threaded spark plugs, commonly found on BMW's, MINI's, Alfa Romeo's and Jaguar vehicles.

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VAT rated at: 20.00 %