2 multi-use, heavy duty cylinders with intense suction action. Flexible Silicone hoses with independent on/off valves for customized use. Removable air hoses easily detach while maintaining superior suction. Easy squeeze trigger handle. Quick air release valve. Ultra flanged base for secure seal. Materials Acrylic cylinders, Silicone hose, ABS plastic handle, release valve,  POM connector, on/off valves. Measurements pumps 2 inches by 1.5 inches. From CalEx.