Overhaul ball adds weight to a crane rope which can keep the crane lines tight. This prevents twisting issues that can damage the crane permanently. Overhaul balls vary in design and size depending on the crane type or the environment it is being used in.
Snatch block with hook is used with wire rope winches and hoists in temporary applications.
Snatch block with shackle is used in both temporary and permanent rigging applications
Wood shell tackle blocks are used for guiding hoist rope and controlling forces in marine applications. The number of sheaves can be from one to maximum seven.