TOOGOO(R) 10 Pcs Blue Plastic 2 Way Aquarium Fish Tank Air Pump Control Valves Product Name : Aquarium Air Valve;Material : Hard Plastic Color : Blue;Connector Diameter (Each) : 4.8mm / 0.18" Thread Diameter : 9mm / 0.35";Total Size : 3.7 x 2.4 x 0.9cm / 1.4" x 0.96" x 0.35"(L x W x T) Weight : 13g