Optimized Performance: Designed specifically for the for Neptune 4 3D Printer, this high-speed 4020 ball blower fan operates at 10000 revolutions per minute, ensuring effective cooling and optimal operation of your 3D printer. and Reliable: Built to last, this ventilator enhances your 3D printing experience by maintaining the necessary cool environment for your extruder, thereby extending the life of your printer parts. Easy Installation: The fan is engineered for easy setup with the for Neptune 4, allowing for a seamless integration and minimal downtime, so you can get back to printing faster. Color: Black & Red Material: plastic Package Contents: 1 * Blower Fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.