Many of you don't like the nozzle clogs and blocks when you are a 3D printer owner. Every extruder nozzle must be cleaned out from time to time. These nozzles are very difficult to clean properly. Never mind. We have an effective weapon to deal with it—a drill cleaner. These Micro-drill bit Extruder Nozzle Cleaners are an essential item for you. The drills are hard and thin enough to get into the nozzle and extract the blocked filament. There are 5 types of drills of 0.2mm 0.3mm, 0.35mm, 0.4mm and 0.5mm suitable for nozzles of 0.2mm to 0.5mm. By using these precision drill bits, you will certainly extend the life of your nozzle keep producing better models.