US Cargo Control E-Track Ratchet Straps Heavy Duty 10000lbs per strap.

RATCHET STRAPS WITH FLAT HOOKS - These ratchet straps have black flat hooks. These black flat hooks are made specifically to hook up to the stake pockets or rub rail of your flatbed semi trailer, which makes it easy to secure your cargo.
INDUSTRIAL GRADE MATERIALS - Tie down straps like these are built with industrial grade materials. These tie downs have weather resistant webbing, coated flat hooks, and a zinc-plated ratchet to provide you with the durability and strength you need.
4 PACK OF RATCHET STRAPS - These durable and well-built ratchet straps come in a 4 pack so that you are ready to take on more cargo securement jobs. They are high-quality straps that give you a dependable cargo securement experience.
3,333 POUND WORKING LOAD LIMIT - This 2 x 30 ratchet strap 4 pack is built to give you more heavy-duty capability. You get a 3,333 pound working load limit with these tie down straps, which means they can take on tough tie down applications.