This nozzle is only compatible with the Hardcore Print core for the Ultimaker 3.
Looking to print awesome abrasive materials on your Ultimaker 3 without destroying the delicate brass nozzle built into the print core? This is your solution.
The Everlast nozzle is fitted with a sapphire tip which provides an extreme level of abrasion resistance. The high thermal conductivity of the brass and the sapphire means that you can use this same nozzle for all of your filaments.