WINSINN 40mm blower fan 24V which micro size and lightweight design, suitable for 3D printer extruder / hotend / nozzle or any DIY cooling and narrow place. High quality Dual Ball Bearings, 5-years Warranty. balance between high air volume and low noise, Suitable for 24 hours / day long-term work, long life: 50,000 Hours. Rated Voltage: DC 24V, Current: 0.09A, Power: 0.96W, Speed: 6500PRM, Air Pressure: 8.34mmHO, Airflow: 3.5CFM, Noise: 33.4dBA Connector & Line length: XH2.54 11.8in(300mm), Size: 40mm x 40mm x 20mm Widely Used: Suitable for ventilation of Small PC Case / Router / Raspberry pie / TV box / VR glasses and any small electronic equipment cooling ventilation.