#40 wt. 3-ply quilting thread 100% Egyptian-grown extra-long staple cotton thread Extremely low lint Home sewing machine needle: #90/34 Longarm machine needle: #18 King Tut is a 40 wt. 3-ply Egyptian-grown extra-long staple cotton thread. We've designed King Tut for quilting on longarm machines and home machines. You and your machine will love the low lint, tight twist, and smooth feel of nature's finest thread.