uxcell Plastic Aquarium Undergravel Filter Board Air Pump Line Hose Tube 24 Pcs Black Product Name : Aquarium Undergravel Filter;Fit for : Aquarium, Fish Tank Material : Plastic;Each Size : 140 x 70 x 12mm/5.5" x 2.8" x 0.5"(L*W*T) Tube Size(Approx.) : 32 x 2.5cm/ 12.6" x 1"(H*D);Hose Hole Diameter : 5mm/0.2" Air Stone Size : 2.5 x 1.4cm/1" x 0.6"(L*D);Main Color : Black, Clear Package Content : 24 x Fish Tank Undergravel Filter,1 x Tube,1 x Air Hose Line w Airstone