COMPRESSION TESTER 300psi FLEXIBLE HOSE 14 & 18mm

Tester checks cylinder compression from 0 to 300psi and features an air-hold valve to reset gauge. Two brass fittings with o-rings are included for 14mm and 18mm spark plug threads. Easy to read 2-1/2in dial is encased in a metal housing with a 12in flexible hose attached.