These sell for $20 a spool of 1200 yds. This is great cord for stunt kites because of its high tensile strength and for everyday around the house stuff......check the specs below.....im selling for $10 a spool and I have 25 spools to sell if you buy more then one spool we can work out a better deal.....

Size 346 Nylon is a heavyweight thread typically used for sewing very thick leather, upholstery fabric, canvass, and auto interiors. Stitching, with a size 26 or 28 needle, very visible and is often used as a focal point. This size is also known as Tex 350 and Government Size 5-Cord. It has an 53 lb. (24.0 kilo) tensile strength; a 0.0258 in. (0.6553 mm) diameter; and gives about 1,200 yards (1,100) meters) per pound.