4 "x 5 'Roll Off Container Winch Strap w/Flat Hook, a professional solution tailored to your cargo securing needs. These straps are made of durable green polyester material and feature a sturdy nylon strap that is 4 inches wide, with a breaking strength of 16200 pounds. This heavy-duty design features a large flat structure at one end that can easily attach to any rolling container, and a stitching ring at the other end that can be secured to any trailer hook to withstand the toughest loads. Whether you are transporting goods on a trailer truck, rack, flatbed truck, or container, our high-quality roll off straps provide safety and convenience. Transportation.