Prusai3 MK3 MK3S Cooling Fan 5015 50x50x15mm 5V DC 0.35A Ｈotend Cooler Blow Radiator Sleeve Bearing for 3D Printer Parts Accessories, 2PcsBrushless DC Blower Fan, necessary DIY replacement extruder hotend parts, This MK3 fan is used for Prusai3 MK3 MK3S MK2/2.5 3D printer ExtruderSize: About 50x50x15mm/ 1.9x1.9x0.59 inch; Cable Length: about 750mm/ 29.5 inchRated Voltage: 5V, 0.35APlease Note: the fan has two sides,but the side with sticker must be always facing the hotend (not visible when the fan is mounted).Otherwise,the cooling won't work properlyPackage Content: 2piece 5015 5V Front hotend blower fans. If need more support, please feel free to contact us, we'll assist you directly