ratchet tie down straps are heavy-duty fastening tools used to secure items during transport, typically in vehicles like trucks, trailers, or boats. They consist of a strap, usually made of durable polyester, and a ratchet mechanism that tightens and locks the strap in place. To use a ratchet tie-down strap, you first thread the strap through the ratchet’s mandrel, pull the slack out, and then use the ratchet handle to tighten the strap until it's secure. Once tightened, the ratchet mechanism locks, ensuring the load is held firmly in place. These straps are ideal for preventing cargo from shifting during transport and come in various lengths and weight capacities to suit different types of loads.