Thicker than the regular Gutermann Sew-All Thread, Gutermann Extra Strong is, as the name suggests, extra strong! It's the right thread for all seams subject to high wear and tear. It's also UV resistant, so suitable for use in outdoor applications. It's a similar weight and can be used in similar applications to Gutermann Top Stitch Thread. 100% Polyester. Thread thickness # 40. Recommended for use with needle size 90-110. For more information, download this brochure. Note: If you use an automatic needle threader or thread cutter on your sewing machine, please check your manual as you may need to manually thread / cut instead while using this thicker thread. Suitable for sewing: Upholstery Denim Canvas Leather Vinyl Applications: for all heavily-stressed seams specially suitable for rugged repair work for heavy woven fabrics, leather and canvas covers especially tear-resistant
