These nozzles are for the Ultimaker 3 and Ultimaker S5 HardCore Kit ONLY.
This nozzle only works with the HardCore Print Core Upgrade for the Ultimaker 3 or Ultimaker S5
The 0.10mm size is for experimenters/experts only! This has a hole the size of human hair! It can get clogged easily (but you can burn it clean again if needed).