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 G1009 ^GAGE GO .0990 NO-GO .1070 Gauges G1002 GAGE GO .0450 NO-GO .0500 – M309 Gauges G1012 GAGE GO .4855 NO-GO .4925 Gauges G1004 GAGE GO .0610 NO-GO .0660 – M309