uxcell Rubber Fish Tank Air Curtain Bubble Diffuser, 90cm, Black Air Diffuser; Used for : Aquarium, Fish Tank Material : Rubber; Pipe Dia. : 10mm/0.39" Pipe Length : 90cm/2.95 Ft; Connector Tip Dia : 3mm/0.12" Color : Black; Net Weight : 60g 1 x Air Diffuser