Product description: Because the thread length of the MK8 nozzle is different from that of the V6 nozzle, there are requirements for the heating block. The original size MK8 nozzle requires the heating block to be shorter than the BP6 and NV6 heating aluminum. Considering that some customers prefer to use the MK8 tip nozzle , So our shop made a nozzle with the same thread length as the V6 nozzle, which can be fully compatible with the use of heating blocks like V6.