Product Code: 35880 Compatible with direct and indirect petrol engines which use 14 and 18mm spark plug threads. The dual reading pressure gauge 0-300psi/0-20bar is fitted with a heavy duty rubber protector. Fitted with a spring-loaded pressure relief valve and integrated Schrader one-way valve system. Supplied in a plastic storage case. 1 x 63mm Diameter gauge 1 x 280mm Flexible hose 1 x Adaptor