Draper Petrol Engine Compression Tester 14mm & 18mm Kit in Case CTEP1 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.