11pc 3D Printer Extruder Nozzle Head Cleaner Bits (7 bits) .2mm .25mm .3mm .35mm .4mm .45mm .5mm + 4 nozzles .2mm .3mm .4mm .5mm for MK7 MK8 Makerbot RepRap for 1.75mm filament ABS/PLA printers Will clear nozzles and produce finer prints Shipped in protective plastic case Japanese made tungsten carbide bits Multi-use: CNC, PCB, Jewelry, Toy Making, Installation.... 4 quality brass nozzles, (1 each) .20mm .30mm .40mm .50mm