Optimal Cooling Technology: Specifically designed for K1 and K1 Max 3D printers, these replacement cooling fans your machine operates smoothly. and Reliable: Crafted with high-quality materials, these DC24V fans are built to last, providing dependable cooling to your printer's hotend, crucial for preventing overheating and ensuring consistent performance. Easy Installation: Each fan is engineered for easy setup with plug-and-play features, making it simple to replace old fans or upgrade your system with minimal effort. Due to different batches, there may be differences in product appearance and printed text, which not affect use. Colour:Black Material:Plastic Package Contents: 1 * Cooling 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.