Chain binders, also known as chain tensioners, load binders, or chain ratchets, are devices used to secure and tighten chains around a load for transportation or lifting purposes. They are commonly used in the trucking, transportation, and logging industries, as well as in various other applications where the securement of heavy loads is required. Chain binders come in different types, but the two primary categories are lever binders and ratchet binders.

Lever Binders (also known as Lever Chain Load Binders): Lever binders use a lever mechanism to tighten the chain. The device typically has a tension hook on each end, and a lever is used to increase the tension in the chain until the desired level of tightness is achieved. Once tightened, the lever is locked into place to secure the load. Lever binders are relatively simple to use but require physical effort to operate.

Ratchet Binders (also known as Ratchet Chain Load Binders): Ratchet binders use a ratcheting mechanism to tighten the chain. These binders have a ratchet handle that allows for incremental tightening of the chain. The ratchet mechanism makes it easier to achieve a high level of tension without as much physical effort compared to lever binders. Ratchet binders are often preferred when a greater force is required.