1Pc 12/14/16/20mm Aquarium Skimmer PVC Pipe Spin Surface Inflow Aquarium Water Plant Filter Cleaning Tool Fish Tank Accessories If you want to buy large quantity,please contact us. We will calculate the details and give you a good price. Details Product: Aquarium skimmer Material: PVC Color: Black/Grey/Dark grey Size :As shown Product features: 1. Aquarium rotating skimmer accessories, used with water pump and water inlet pipe, please check carefully whether the diameter of the water inlet pipe matches the product when purchasing, otherwise the product will not rotate. 2. If the product does not rotate, first check whether the product and the water pipe are stuck, and adjust the flow rate of the water inlet and whether the power of the water pump is appropriate. Package include 1 x aquarium skimmer accessories Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!