Brushless DC Blower Fan, DIY replacement extruder hotend parts for Prusai3 MK3 MK3S MK3S+ Size: About 50x50x15mm/ 1.9x1.9x0.59 inch; 40x40x10mm/ 1.7x1.7x0.39 inch; Cable Length: about 750mm/ 29.5 inch, not for Prussa MK4 or XL Rated Voltage: 5015 Printing fan DC 5V, 0.35A 5800rmp; 4010 Cooling fan DC 5V, 0.2A, 6800rmp Please 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 properly For the Prusa Part, our shop also offer MK52 print bed - extruder - stepper motor - silicone cleaning brush, if needed, please welcome.