uxcell Aquarium Tank Air Stone Diffuser Bubble Wall Tube, 18", Yellow Product name : bubble wall air stone tube; suitable for : fish tank, aquarium Design : tube shaped; material : plastic, rubber Tube size(jointed) : 45. 7 x 1cm / 18"x 0. 4" (l*d); color : yellow, blue Net weight : 34g Package content : 2 x bubble wall air stone tube(jointed length 14"); 3 x suction cup