River Silks Crayon Overdye Collection - 7mm Silk Ribbon Spools 20 spools (5.5 yards each) of beautiful and durable 7mm 100% hand-dyed silk ribbon Needlepointers can stitch with lengths of 4-6 feet without any fraying. Quilters can sew through the ribbon without any running. Perfect for Silk Ribbon Embroidery. Woven as ribbon with a barely perceptible selvedge which gives them incredible durability. Will not run or shred while you are using it because the thread count is so high.