Uxcell Aquarium Air Flow Control Lever Pump 2-Way Valve Product Name : Aquarium Air Valve; Material : Stainless Steel Color : Silver Tone; Port Outside Diameter : 4mm/0.16" Outlet Diameter : 4mm/0.16"; Overall Size : 25 x 20 x 8mm/0.98" x 0.78" x 0.3"(L*W*T) Net Weight : 23g Package Content : 1 x Aquarium Air Valve