Gütermann 100% polyester jean thread is perfect for heavily stressed seams such as denim leisure wear. Use when stitching denim fabric for traditional jean seams or decorative stitching. Comes in a variety of colours appropriate for denim. Grey spool colour. TKt No. 75, Tex: 40, Dtex: 400, 2-ply. Suggested needle size: US 12/16 (80-100).