[Brass Fittings]: M10, M12, M14, M18 (Male, With "O" Ring). Fitting Size: M10, M12, M14, M18. Size: M10 1mm, M12 1.25mm, M14 1.25mm, M18 1.5mm. 8PCS Petrol Engine Cylinder Compression Tester. [Function]:The Compression Tester for Petrol Engine kit is used to test pressure of gasoline engine cylinder.
