Double Ball Bearing: The cooling fan features double ball bearing structure, which has higher rotational speed and quicker heat dissipation than traditional bearing structure, and extends the service life of the fan; Product Function: This fan is designed to cool the printed layers during the printing process, rapidly solidifying the extruded material to ensure each layer maintains its shape before the following layer is deposited; Applicable Range: With size of 50x50x15mm, this 5015 blower fan is specifically designed for 3D printer, integrated 4P terminal, and suitable for various cooling applications within a temperature range of -10 to 80 ; Easy Installation: The cable connector is installed, allowing for immediate installation and use. This cooling fan can easily replace old or damaged fan without the need to disassemble the motherboard or other components; Stable Working: Thanks to the double ball bearing construction, this fan can easily withstand forces in both vertical and horizontal directions, ensuring more stable work at high speed and reducing vibrations and noise

What's in the box
1 x Bearings