1.Nylon 66 Bonded Sewing Thread offers extremly excellent abrasion resistance 2.Spec:210D/2,3, ... ,3,4,5. Nylon 66 Bonded Sewing Thread lComponent: Polyamide 66 synthetic fibre, popular name Nylon 66 synthetic fibre. lSpecification: 140D/3,210D/3 ... twisting the yarn, then sticking and finalize the design. While sewing the thread does not disentwine, not cottony. Compared with other threads ...