Pawfly 6 PCS Ball Shape 1.2" Air Stone ASR030 Mineral Bubble Diffuser Airstones for Aquarium， Fish Tank， Pump and Hydroponics</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Can be easily driven even by Nano Air pumps， suitable for aquarium， fish tank and hydroponic.</li><li>MODEL: ASB-030. Jetting Volume: 1 L/min， Recommended Air Pump Power: 2 W-4 W.</li><li>Fits for 3/16" / 4 mm inner diameter tube. Color: Grey.</li><li>Compact Diameter Size: 1.2" / 30 mm. Net Weight: 5.6 oz / 160 g.</li><li>Comes with 6 Pcs Ball style air stones & 100% money back guarantee.</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/51oPiHKentL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51cO9wAKsIL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51jKi8O26-L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41Yn2C1SosL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/61bZw9cVlAL.jpg' noproxy></br>