... : 25gg, 20gg,25gg, 30gg, 32gg, 36gg, 38gg, 40gg, 42gg 15*18*36*3.5 R222 GF3037gauge working part , TriangularGauge Shank, 15 (shank ... diameter in Millimeter is 1.83)gauge intermediate section, 18 (intermediate section diameter in Millimeter is 1.2)Gauge Working ... Distance (in mm), R ( Barb Distance in Millimeter is 6.36 )No. of barbs on first edge, 2No. of barbs on ...