uxcell Aquarium Dual Row Air Flow Control Lever Valve Silver Tone 8-way Air pump aquarium control air water flow lever valve is the best choice for fish tank and aquaculture applications. Color : Silver Tone;Branch Outlet Valve Dia(Each) : 3.5mm/ 0.13";Inlet Valve Dia : 15mm / 0.59";Overall Size : 11 x 6 x 2.5cm / 4.3" x 2.4" x 1.0"(L*W*H) Lever valve let you operate it easily. This lever valve can be used for aquarium, hatchery and aquaculture applications. Lever valve let you operate it easily. This lever valve can be used for aquarium, hatchery and aquaculture applications.