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 G1011 ^GAGE GO .0740 NO-GO .0780 Gauges G1018 GAGE GO.1920 NO-GO.1980 Gauges G1003 GAGE GO .0520 NO-GO .0570 – M309 Gauges G1022 GAGE GO.0485 NO-GO .0535