Tensioner lever are frequently used in the offshore oil industry to secure loads on trucks at the dock and to secure material on the back deck of a vessel heading out to a platform or rig.The tensioner lever has other names such for binder lashing,lashing binder,chain binder,chain lashing,lever lashing, lever binder.here we will introduce you Spring Tensioner lever for chain drive. In a spring-loaded tensioner lever having a coiled torsion spring accommodated in a space inside the lever, a stopper mechanism, comprising a pin held removably in a hole in the lever, holds an arm of the torsion spring against movement in the unwinding direction, while the lever, or the chain, is being mounted on a mounting surface. The pin and a bent end of the arm of the spring fit into holes in the mounting surface positioned so that a pivot shaft-receiving hole of the lever is automatically aligned with a shaft-mounting hole in the mounting surface