High quality - MK8 nozzle is made of high quality hardened steel. Heavy duty, long service life. Easy to install and replace.Precise design - 3D printer nozzles can effectively prevent the print head from leaking, prints, and shiny polishing. Reduce the resistance of the corners and avoid using rounded corners to block the filaments. Easy to identify the size on each nozzle.Parameters--input diameter 1.75 mm; output diameter 0.4 mm; thread: M6; hexagon diameter: 6 mmApplicability and compatibility - MK8 extruder nozzle is suitable for -10, MK8 Reprap Prusa I3, compatible with all 1.75 mm ABS 3D printers. Fully match the original product.Material:Hardened steelcolour:BlackPackage Contents:2 x 0.4mm MK8 nozzleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.