... , 20gg,25gg, 30gg, 32gg, 36gg, 38gg, 40gg, 42gg 15*18*40*3 M222 GF3037this needle isgauge working part , TriangularGauge Shank. 15 ... section diameter in Millimeter is 1.2)Gauge Working Part, 40 (triangular blade height in Millimeter is 0.48)Nominal Length ... , 2 felting needles(Guaranteed 100%+High quality+Competitive price+fast shipping)