3D Printer Kit Extruder Nozzle Head Cleaner Bits 2 each .3mm .35mm .4mm .45mm .5mm + 3 nozzles 0.3mm 0.4mm 0.5mm for MK7 MK8 Makerbot RepRap print nozzle for 1.75mm filament ABS/PLA printers Will clear nozzles and produce finer prints Shipped in protective plastic case Japanese made tungsten carbide bits From Daewon Industries 3 quality brass nozzles, sizes .30mm .40mm .50mm