T-70/#69 Bonded Nylon Sewing Thread (400 yards, Earth Tan) Applications: Automotive, Furniture, Luggage & Handbags, Medical & Orthopedic Devices, Safety & Flotation Devices, Sporting Goods, Covers/ Web Slings & Tiedowns, Specialty Industrial T-70 has a tensile strength of 14 lbs on a straight pull. When sewn into a seam you will get 300 + lbs on a side pull. When you add a back-tack or bar-tack the side pull strength will triple or more. Avaiable in Many Colors Needle size 18 Made in Americia