Colt Muscle Nips Pump 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 flange base for secure seal. Safe and pure for body and pleasure. Made using phthalate free materials Acrylic cylinders, Silicone hose, ABS plastic handle, release valve, Polyoxymethylene POM connector, on/off valves. Bulk weight 7.2 ounces. 2 inches by 1.5 inches each cylinder.