uxcell Aquarium Metal 2 Way 3.3mm Inner Dia Air Line Tubing Flow Control Valve 4pcs</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Package Content: 4 Pcs x Aquarium Control Valve; Total Size: 30 x 22 x8mm/1.2" x 0.8" x 0.31"(L*W*T)</li><li>Color: Silver Tone; Material: Metal</li><li>Product Name: Aquarium Control Valve; Net Weight: 28g</li><li>Inside Diameter 3.3mm</li><li>Connector Outer Dia (Approx.): 5mm/0.19"</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/416DPoI883L.jpg' noproxy></br>