uxcell Aqua Life Air Check Flow Control Swtich Gang Valve 4 Way Material: Plastic; Product Name: Aquarium Air Check Valve Net Weight: 63g; Battery Included: No Size: 102 x 67 x 54mm/4" x 2.6" x 2.1"(L*W*T); Outlet Diameter: 2mm Color: Clear,Black Package Content: 1 x Aquarium Air Check Valve