When negative pressure is applied, the grippers can softly grasp and carry nonrigid and irregularly shaped products and packages — both wet and dry. Various grippers are available, and they are easily swapped out to let food-processing lines handle more than one product or package size. For example, specific grippers are designed to hygienically pick and place flat packs, clamshells, and salad trays; other versions handle meat or cheeses. Grippers can safely pick up loads from 0.3 to 12 lb and withstand high and low temperatures.