Fangrui Product Details As Most Filaments Are Made From Plastics,they Are Often Statically And Attract All Sorts Of Debris From Around Your Filament Storage Or Work Space. The Anti-static Filament Cleaner Wipes Lint,dust,or Other Dirt Before The Filament Enters Your Printers Valuable Extruder And Nozzle. The Use Of The Filament Cleaner Block Prevent Your Nozzle From Being Blocked By A Buildup Of Debris And Extend Your Nozzles And Hot-ends Useful Life. As The Filament Is Pulled Through The Cleaner Block, Dust, Hair, Small Plastic, Or Other Material Shavings Are Wiped Off The Of The Filament. As Hot-ends, Extruders And Nozzles Are More And More Sophisticated And Monolithic, Repair Or Is Costly And Also Can Incur Quite Some Printer Down-time. This Filament Cleaner Prevents All This And Keeps You Printing Without Interruption. Name:filament Cleaner Compatible For:1.75mm Or 3.0mm Filament Quantity:5pcs Colour:black Material:plastic+foam Size:15x30mm Package Contents: 5 * Filament Cleaner Block Only The Above Package C