The Phaetus Dragonfly Hotend BMS ST makes it possible to print with abrasive materials. This hotend has a metal only heat break. This ensures better heat transfer and prevents clogging of your filaments. The heat sink and heat break have a conical design. This creates a smoother filament conduction and heat transfer. With the Phaetus Dragonfly Hotend BMS ST you can print your designs at temperatures up to 500 degrees.