;void(0)) Allstar 96520 - Compression Tester Tester checks cylinder compression from 0 to 300 PSI 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 2-1/2" dial is encased in a metal housing with a 12" flexible hose attached. ALL96520 Compression Tester Price: $19.99 GO BACK | ||