Description: Application Scope: 3d printer heat sink, mk7MK8 extruder. The 40x40x11 heatsink can be used with a 40x10 fan. It is specially designed for the Makerbot. The 42-step motor has a suitable mounting hole distance and the heat dissipation area is large. Size: approx. 40x40x11mm/1.6x1.6x0.4inch. Package Includes: 1x heat sink
