uxcell 5mm Tube Dia Single Way Metal Aquarium Air Valve Silver Tone Product Name : Aquarium Air Valve;Material : Metal Color : Silver Tone;Male Thread Dia : 5.4mm/ 0.21" Fit Air Tube : 5mm/ 0.2";Overall Size : 24 x 21 x 8mm / 0.95" x 0.84" x 0.31"(L*W*T) Net Weight : 8g;Package Size : 30 x 20 x 10 Package Content : 1 x Aquarium Air Valve