Features 1、Ideal for cooling hot ends, printing material or other radiators that require cooling, suitable for 3D printer. 2、Cooling fan special designed for printer use to ensure the normal operation of the 3D printer, can extend the service time. 3、Can work continuously for 24 hours, durable and reliable in use, having stable and excellent performance. 4、About 50 x 50 x 15mm / 2 x 2 x 0.6in of the cooling fan size, including 2pcs printer cooling fan of the package to meet your needs. 5、Made of high quality PBT+30% glass filament +VO, high precise bearing design, low noise and having long life. Specification Item Type: Printer Cooling Fan Material: PBT+30% glass filament +VO Size: Approx. 50 x 50 x 15mm / 2 x 2 x 0.6in Operating Environment Temperature: -20℃ ~ 75℃ Service Life: Working environment temperature is 40℃ (60,000 hours) Service Life: Can work continuously for 24 hours Speed: 4500, 6500(R/min) Voltage: DC 24V Structure: Double sleeve bearing Fitment: Fit for Ender-3 Fit for Prusa i3 Package List 2 x Fan