I don’t know much about this, see photos.
Performance Tool Compression Test Kit W80579; Flex Drive, 14/18mm 0-300psi
???????? Snap-On Tools USA 3pc Compression Test Gauge Hose Set Lot, 10mm 14mm 18mm
Snap On 18mm Compression Tester Gauge Stubby Short Adapter Fitting ONLY MT26 USA
Snap On MT26 - 11B - 18mm Compression Tester Gauge Hose
Lisle 20250 0-300 PSI 14mm & 18mm Compression Tester
8 PC Compression Tester Kit - 300 PSI Automotive Compression Test Set 6 adapters
