Quality welded frame for maximum strength and long life. Exclusive "Hydra-Lift™" bed for effortless adjustment of the vertical daylight (10-ton models are manual). Roller head design is standard to allow movement and locking of the cylinder from side to side(10-ton, 25-ton, and 30-ton are manual). All models in the Quick Selection Chart have been matched to a pump, cylinder, hoses and gauge, offering the complete package.