Feeler Gauge The readings are etched into feeler gauge for easy identification. Turn the knob with the feeler gauge in place till the side electrode compresses to the desired gap thickness. Use your desired size feeler gauge for gap thickness.
UPR Precision Spark Plug Gap Tool 14mm Gapper Gapped Gapping Electrode Tuning
UPR Precision Spark Plug Gap Tool 10mm Gapper Gapped Gapping Electrode Tuning
UPR Precision Spark Plug Gap Tool 12mm Gapper Gapped Gapping Electrode Tuning
Buck Performance Precision Spark Plug Gap Tool 10mm - Gapper Gapped Gapping
Buck Performance Precision Spark Plug Gap Tool 14mm - Gapper Gapped Gapping
Buck Performance Precision Spark Plug Gap Tool - Gapper Gapped Gapping
