TWP 5 pcs 3d printer parts for Makerbot MK7 / MK8 404011mm Heatsink Cooling Fin Aluminum Heat Sink Extruder Motor Go to amazon.com Related posts The 10 best heatsink extruder 2022 DescriptionName:Heatsink Meterial:Aluminum Color: Black Fin length 40 mm width 40 mm thick 11 mm Products introduction Makerbot is special, 42 stepper motor mounting holes from the right, the cooling area is larger