... blade: 25gg, 20gg,25gg, 30gg, 32gg, 36gg, 38gg, 40gg, 42gg 15*18*36*3.5 R333 F1002this needle isgauge 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 ...