... ×3 1.15 ≥25 1580 Application: Nylon 66 sewing yarn is the best choice for sewing high-class shoes, bags, forniture, outside ... products. Nylon 66 sewing yarn is the No.1 in all sewing thread. It is made by twisting the nylon filament, sticking inside, and ... to make sure no separation. Due to the advantage of nylon materials and the effective lubricant disposal,nylon bonded N66 sewing thread has ...