Premium Quality--MK8 nozzles are made of high quality brass material.Heavy duty and provide a long service life.Easy to install and change.Precise Design--3d printer nozzles can prevent print head from leakage effectively and produce consistent prints with smooth and glossy polish.Reduce the resistance from the corners and avoid blocking of the filament with rounded chamfer.Easy to identify with engraving the size on each nozzle.Applicability and Compatibility--MK8 extruder nozzles fit for 3D Printer Makerbot Creality CR-10, MK8 Makerbot Reprap Prusa I3, compatible with all 1.75mm PLA ABS 3D printer. Fit exactly like the original.Package Include--Printer nozzles come with 24 pieces MK8 nozzles in 7 sizes(quantity x output diameter): 2 x 0.2mm, 2 x 0.3mm, 12 x 0.4mm, 2 x 0.5mm, 2 x 0.6mm, 2 x 0.8mm, 2 x 1.0mm,with a plastic box for storage.Parameter--Input diameter 1.75mm; output diameter 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm; Screw thread: M6;Hexagon diameter: 6 mm