Gardner Bender 45-518UVBN Heavy-Duty Cable Tie, 18 inch, 180 lb, Electrical Wire and Cord Management, Nylon Zip Tie, 10 Pk, UV Resistant Black Designed for rugged environments demanding high levels of tensile strength and large bundle diameters Lock tight without stretching or sliding Manufactured with one-piece, injection-molded construction to eliminate failure due to parts working loose or breaking off Raised ridges on the cable ties bent tips provide a secure grip Made from durable 100% nylon 6/6 material It is 10 Pack 18" Black Heavy Duty Cable Tie Nylon Ultra Violet Resistant 175 LB Tensile Strength This is a Gardner Bender Inc Product