... 120D,150D, 210D, 250D, 420D 3) feature: high tenacity high tenacity nylon yarnnylon 6 filament yarn has excellent break of tenacity ... , high strength,low shrinkage, perfect glossy ... production bonded thread for sewing high-class shoes, bags, leather, safety-belt.High-Tenacity Nylon YarnLinear DensityNo.of FilamentBreaking ...