3D PRINTER FANS - The 4010 Fan is a high-quality cooling fan designed specifically for 3D printers, providing efficient cooling to ensure optimal printing performance and prevent overheating. 40MM SMALL EXHAUST FAN SPECIFICATION - Rotating Speed: 3000prm/ low speed. Noise: 18.2DBA low noise / Quiet / Silent. Current: 0.03A, Power: 0.24W, Bearing Type: Hydraulic Bearings, long life: 30000H, Airflow: 3.94CFM, Air Pressure: 1.65mmH?O Power Connection: 2Pin-XH2.54 (NOTE: Red wire is positive, Black wire is negative) WIDE APPLICATION - DC 12 Volt Strong Air Flow FAN Suitable for 3D printer, small squirrel cage, humidifier, aromatherapy and can be used as a replacement fan for any electronic products. SIZE - 40*40*10mm(L*D*H), Which micro size and lightweight design, suitable for 3D printer hotend / nozzle or any other cooling needs. Cable length: 23.6in (600mm). SAFE - This fan meets FCC and CE guidelines and has been approved to ensure a safe and productive work environment.