... Chinese needlepunch firms2, has through the ISO9001: 2008 quality system certification5. has the barb: 1 barb, 2 ... , 36gg, 38gg, 40gg, 42gg 15*18*36*3.5 R222 GF3037gauge working part , TriangularGauge Shank, 15 (shank ... is 0.57)Nominal Length (in inch), 3 .5 ( needle total length in Millimeter is 89 )Barb ... , 2 triangular felting needles (Guaranteed 100%+High quality+Competitive price+fast shipping)