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 G1006 GAGE GO .0760 NO-GO .0810 – M309 Gauges G1021 GAGE GO.0495 NO-GO.0530 Gauges G1011 ^GAGE GO .0740 NO-GO .0780 Gauges G1007 GAGE GO .0860 NO-GO .0950 – M309