High tenacity polyester sewing thread is made of high tenacity polyester yarn. good lubrication , knotless, good twist, 1.00kg per spool, it is suitable to quilting seam,   shoes, luggage bag, leather products. specification : 150D/3 210D/2 210D/3 250D/2 250D/3 300D/3 300D/4 420D/3 500D/3 630D/3 1000D/2 1500/2 tenacity: 6.5 G/d, 7.0G/d, 7.5G/d elongation: 15+/-2% 850gsm/bobbin. 1kg/bobbin,1.5kg/bobbin king spool, or plastic spool for dye