Description This fish tank permeable cover is made of quality PVC materials for safe and durable use. It will be helpful to creative a good fish tank environment. Easy to install, very practical and durable water tank supplies, convenient for you to raise some pet fishes.Features- Color: White.- Material: PVC.- Note: Inner diameter: 40mm.- Note: Glue bonding, not hot melt.- This product is made of high- quality PVC material, and has good toughness.- very convenient to use and install. Good water permeability.- Though simple in design, it& 39; s so practical when you use it.- Can be used for fish tank, fishpond, seafood pond, etc.- Can send it to your close friends as a gift who have a fish tank or seafood pond. Package Including2 x fish tank permeable covers