Step up strength and style with Gore® Tenara® M1000HBK-5 in Size 138 black—designed for durable, high-tension seams on marine or architectural outdoor fabrics. Made from expanded PTFE fibers, it refuses UV breakdown, discoloration, mildew, or chemical damage, maintaining stitch integrity in extreme conditions. Its bolder black thread stands out—or blends in—at your discretion, and its robust build handles heavy stitching effortlessly. Choose this when you want both visual edge and industrial-grade longevity in every seam.