Coats 30wt 100 Mercerized Cotton Machine Quilting Thread. This thread is lustrous, smooth and has little to no stretch. It is used for machine or hand sewing on woven fabrics. The larger size is perfect for home machine or long arm use. 3 spools per box, 1200 yards per spool, 60 spools per case. Machine Needle Size: 11 or 14.