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The item shown is a heavy-duty mechanical jack, often referred to as a "monkey jack" or a mechanical ratchet jack, designed for lifting heavy loads like trucks or construction equipment.
Capacity: Typically available in capacities ranging from 3 to 20 tons.
Mechanism: Operates using a manual crank handle and geared wheels to lift and lower loads.
Features: Often built according to safety standards like DIN 7355, featuring automatic mechanical brakes for safety.
Usage: Commonly used in automotive repair, construction, and lifting applications in confined spaces.