The So Fine! Bone 452 Poly 50wt thread is a premium 50 wt. 3-ply polyester thread designed specifically for bobbin thread quilting and sewing projects. This lint-free thread has a matte finish and smooth texture, making it a favorite among both longarm and home machine quilters. With a length of 3280 yards, this thread is ideal for various crafting projects, ensuring high-quality results with its excellent blending capabilities.