These are official Ultimaker Spare Parts, and include the integrated nozzle-block, PTFE coupler, PTFE Ring, Isolator Nut, Spring, PT100B Temperature Sensor, and 14mm set screw.
For Ultimaker 2, Ultimaker 2 Go, and Ultimaker 2 Extended; not compatible with Ultimaker Original/+, nor with the Ultimaker 2+ and 2 Extended+, or Ultimaker 2+ Connect.