Features:OOTDTY Five-way outlet cylinder air flow control rod valve distributor silver shunt set. A great set of high quality accessories allows your air pump to control air flow as expected. All dispensers are rigorously tested to withstand at least 2 kg of pressure before leaving the factory. At the same time, it is safe to use and easy to operate. Outlet valve diameter: 3/16 "/5 mm Check valve vent diameter: 3/16" /5 mm.Package Contents: 1 x 5 way air valve dispenser 5 check red check valve 6 suction cups. Specifications: Material: PlasticSize: As ShownPackage Includes: 1x 5 Way Air Valve Dispenser 5x Check Red Check Valves6x Suction CupsNote: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.