It is a new extruder for M200, M300, M200 Plus and also on Micro Swiss Heatsink Features 1. can be all metal or not 2. has half the height of the alu block compared to the original, so it feels better retractions with materials that tend to make stringing as zpetg, zglass, high flexible rubber 3. has its own heatsink composed of two throats that help to dissipate and the higher one by touching with the original heatsink transmits more heat to the heatsink itself, 4. the wall of the throat that touches the heat sink creates a greater contact surface also for the passage of the signal during bed leveling, so it will save several platform from drilling 5. nozzle M6 compatible with all M6 in the world 6. can be installed on M200, M300, M200 Plus and MS heatsink 7. the smallest alu block allows go fast into heat and keep it better