Proto-Pastas Plated brass wear resistant nozzles are made from brass for good thermal conductivity and plated with an extremely hard, but lubricative coating. The coating increases the life of the nozzle significantly. They have yet to wear out a nozzle! With normal brass nozzles noticeable wear can occur after as little as 500g of Stainless Steel material, or other abrasive filaments.
These Wear resistant nozzles are made by Micro-Swiss and have been tested to work with all Proto-Pasta filaments including steel infused.