... system certification5. has the barb: 1 barb, 2 barbs, 3 barbs on each edge6. has working 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 ... height in Millimeter is 0.58)Nominal Length (in inch), 3.5 ( needle total length in Millimeter is 88.9 )Barb ... on 2nd edge, 3No. of barbs on 3rd edge, 3