fysetc prusa i3 mk3 cool blower fan kit 4010 5015 dc 5v extruder hotend cooler radiator for 3d printer diy parts accessories, 2pack fysetc <b>fysetc is a professional supplier of 3d printers related accessories products. include popular printer cr-10, ender 3, prusa i3, makerbot, anet a8, duplicator i3, tevo tarantula, maker select v2 etc. it has a professional r&d team and high quality after-sales service to ensure that you can purchase at a reliable price. if you need more, please feel free to email or qa us, we and our engineers are very happy to assist you.</b><br><br> <b>package includes:</b><br> 1 x 5015 fan cooling<br> 1 x 4010 fan cooling