uxcell 90cm Rubber Coated Air Curtain Bubble Wall Tube for Fish Tank Aquarium Product Name : Air Curtain Tube;Material : Rubber Coated Color : Black;Length : 90cm/ 35.4" Diameter : 1cm/0.4";Valve Hole Dia : 0.22cm/ 0.086"(Inner Dia),0.5ccm/ 0.19"6(Outside Dia) Net Weight : 102g Package Content : 1 x Air Curtain Tube