Sometimes, the filament poop caused by cleaning the nozzle for a new color doesn't follow the planned path. All it takes is a little help, and everything cleans up smoothly. Designed to be easily magnetically attached to any metal surface, or for less than 4g of filament, it's an easy-to-store and easy-to-use tool, always ready to use. Easy access through the filament poop outlet without compromising your work in progress.