2PCS Aquarium supplies: 1 x Aquarium Air Line Pipe & 1 x filter protectionProduct Name: Aquarium Air Line PipeTotal Length: 2M / 78.7inchInternal Diameter: 5mm/ 0.19inchExternal Diameter: 6mm/ 0.23inch100% brand new and high qualityAn attractive opportunity to make your aquarium shrimp fish safe.Inner size ( x H): 16 mm x 85 mmNote: Stainless steel filter guards fit over the filter intake, not on the screen.If you have a filter with an integrated filter, this filter guards without adjustments.Small animals such as most of the freshwater shrimp, invertebrates and small fish and fry are in danger, in the large slots on most standard inlet filter sucked.Metal filter tube for aquarium large to promote the exchange of gases and increasing the dissolved oxygen.perfect for tropical fish farms, koi ponds, sewage systems, cooling Towers and other commercial and industrial systems.For use with wet/ dry filters (here is not included) in order to improve the biological filtration.Description:When cleaning is required, simply brush off accumulated dirt from the filter guard with your hand or a soft brush of some sort as a toothbrush.Material: Soft Plastic+stainless steelColor: Clear+silverPackage Contents :1 x Aquarium Air Line Pipe1 x filter protectionOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.