Features: 100% brand new and high quality Made of high quality plastic material, strong and durable. Match with most of water changers and sand washers, please check the interface size of the water changer before purchasing. Can be used to clean gravels and fine sand. When cleaning the fine sand, please do not adjust the flow rate too much to prevent the sand from being sucked into the pump. Interface size of the tube, about 14mm/0.55in for inner diameter, 18mm/0.71in for outer diameter. Package Includes: 1 Piece Replacement Tube for Aquarium Gravels Cleaner Specifications: Material: Plastic Color: Transparent Size (Approx.): 17x4cm/6.69x1.57in, Tube I.D.14mm/0.55in, O.D.18mm/0.71in Weight: Approx.60g note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!