Suitable for petrol engine cars/ motorcycles/ scooters/ lawn mowers. Kit contains 4 thread adapters: M18x1.50mm, M14 x 1.25mm, M12 x 1.25mm & M10 x 1.00mm. Corrosion resistant brass spark plug adaptors. Metric (kg/cm²) and imperial (psi) pressure gauge readings. Supplied in blow moulded storage/carry case.