THREAD SPOOL: Features one 500 yard spool of Superior Threads King Tut 40-weight thread made from three plies of 100% Egyptian cotton 100% COTTON: Extra-long staple Egyptian cotton gives King Tut thread the smooth feel of nature's finest thread LOW LINT: Created with the finest spinning, twisting, dyeing and finishing techniques to create an extremely low lint thread GREAT FOR CRAFTING: Both you and your machine will thoroughly enjoy the sewing and quilting experience with this thread MACHINE USAGE: For best results with home machines, use sewing needle #90/98; For best results with longarm machines use needle #18