uxcell Air Pump Curtain Bubble Wall Diffuser 48 Inches Length Black for Fish Tank Color: Black; Package Content: 1 x Aquarium Air Curtain Total Size: Length: 120cm/48"; Material: Rubber,Plastic Product Name: Air Curtain Bubble; Net Weight: 141g Tube Diameter: 9mm/ 0.35" Connector Size: 4 x 2mm/ 0.15" x 0.07"(Outer Dia*Inner Dia)