Check the listing for details. Fish Tank Air Pump Bubble Oxygen Diffuse Disk Stone Plastic Aquarium Pond Plugs. Condition: New. Listed at 2.03 USD. Fish Tank Air Pump Bubble Oxygen Diffuse Disk Stone Plastic Aquarium Pond Plugs Product Information Specification ▫️ Name:Seafood Pond/Fish Tank Plastic Oxygen Plugs▫️ Colour:Blue▫️ Material:PVC ▫️ Features:PVC water supply material, environmental protection and safety, suitable for seafood pool oxygen supply, or group tank pipeline oxygen supply use. Wall mounted air outlet, does not occupy space, instead of the traditional oxygenation hose connection, beautiful and easy to clean Types ▫️ Flat Head Fine Grit▫️ Flat Head Coarse Grit▫️ Convex Head Fine Grit▫️ Convex Head Coarse Grit▫️ Inner Plug Air Cap▫️ Inner & Outer Teeth Air Stone Small Size (With Gasket)▫️ Inner & Outer Teeth Air Stone Large (With Washer) ▫️ The outer diameter of the interface are 20mm, matching 20mm (1/2") pipe fittings, the main pipeline need to cooperate with the check valve to prevent power outages back to the air pump. Types 2 ▫️ Tee Caps▫️ Elbow Air Cap▫️ Direct Air Cap▫️ Inner & Outer Teeth Air Cap (With Gasket)▫️ Inner Plug Air Stone▫️ Inner Plug ▫️ Matching 20mm (4 points) pipe fittings, the main pipe needs to be matched with a check valve to prevent power outages back to the air pump. 🔴 Package Include: •According to your Choose 🔴 Delivery details: • We only accept your Ebay Address,Please Make sure it's right. • The items you ordered will be shipped out in 3 business day by Air Mail when your payment is clear. 🔴 Terms of sales： • If you are not satisfied with the item, please contact with us. • We will offer Full Refund to you when we receive your returned item. • Any problem, please feel free to contact with us. 🔴 About us: • If you are satisfied with the products,I expect you can leave us a positive feedback. • If you have any problem or be not satisfied with them,please feel free to contact us,we will reply you within 24 hours. 🔴 Contact us: • We care about our valued buyers, if you have any questions, our Customer Service staffs will be very glad to help you. We try our best to reply to your emails as soon as possible, however, due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. Please allow 24 business hours for us to response. 🔴 About item: • For the functional products in our shop, we make sure that the functions are the same as description, but the actual color and shape may looks a little different from pictures because of the technical improvement and manufacturing variance. Please be advised before you bid. On Jun 18, 2024 at 07:12:23 PDT, seller added the following information: