Home / Crimp Tool Gauges / Gauges / G640 G640 GAGE GO .0370 NO-GO .0420 Add to quote SKU: G640 Category: Gauges Description Description GAGE GO .0370 NO-GO .0420 Related products Gauges G1001 GAGE GO .0360 NO-GO .0410 – M309 Gauges G1020 GAGE GO.1970 NO-GO.2020 Gauges G1015 ^GAGE GO .1000 NO-GO .1100 Gauges G1016 GAGE GO .1490 NO-GO .1530