uxcell Fish Tank Round Shaped Gray Air Bubble Disk Stone Airstone</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Color: Gray; Package Content: 2 x Aquarium Air Stone Disk</li><li>Total Size: 9.5x6.8x2.2cm; Material: ceramics</li><li>Net Weight: 274g; Product Name: Aquarium Air Stone Disk</li><li>Stone Size: 2.68" x 0.87"/ 6.8xx2.2cm (D*H); Connector Size: 4mm/ 0.16"</li><li>Model: NAU-012</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51yHZK5esGL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51Z7dKI5dXL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51VwK3uWj7L.jpg' noproxy></br>