Tinksky A Roll of 300M Durable DIY Polyester Stitching Sewing Thread Kite Line Fishing Line on a Paper Tube (Black) Color: mainly black. Material: durable soft polyester. Total length: about 300 meters. Thread diameter: about 0.8mm. Combines the strength of polyester with a soft touch and sheen similar to cotton. An ideal multi-purpose thread for your sewing crafts from apparel to drapery to slip covers. Ideal for hand and machine quilting. Also act as a durable kite line or fishing line for use.