uxcell 2 Pcs DC 12V RPM4540 Micro Air Pump Motor for Aquarium Fish Water Tank DIY Air Output Dia.: 3mm/0.12"; Country of Manufacture: CHINA; Brand: DMiotech Material: Metal, Plastic; Net Weight: 145g; Package Content: 2 Pcs x Pump Motor Model: MI360H; Main Color: Silver Tone,White Working voltage: DC 12V; Total Length: 53mm/2.1" Speed: 4540RPM; Body Size(approx): 3.2 x 2.7cm/1.3" x 1.1"(L*D)