WorldPac (Pack of 20) E Track Rope Tie Offs for Cargo Trailers, Enclosed Vans & Trucks Pack of 20 E-Track Rope Tie-Offs - Color May Vary (Yellow or Black) Rated at Working Load Limits of 1,100 pounds and Assembly Break Strength of 3,000 pounds Solid Steel D Ring and Spring Fittings with Zinc Plated for Weather Protection Polyster Webbing - will not stretch over time or loosen with road vibrations SNAP AND GO, No tools needed for securing Cargo to transport on truck, Van or car trailer.