Exclusive thread for quilting machine Top thread Standard: 150d/3 210d/3 Diameter: 0.29mm 0.31mm Gross weight: 1000g/500g Net weight: 9000g/450g Length: 17200m/8600m 13800m/6900m Bottom thread Standard: 300d / 40s/2 / 40s/3 Diameter: 0.19mm/0.18mm/0.22mm Gross weight: 500g/400g/400g Net weight:470g/380g/380g Length:12800m/11500m/8500m