[Premium Quality]MK8 nozzles are made of hardened tool steel. Good abrasion resistance and heat resistance, good corrosion resistance and heavy duty can provide a long service life. Easy to install and change. [Good performance]The hardened tool steel nozzle has high toughness and hardness performance, available for the most common 1.75 mm high temperature 3D printer filaments of carbon fiber, fiberglass, etc. [High precision]0.4mm 3D printer nozzle's diameter error is less than 0.02 mm, 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. [Compatibility]MK8 extruder nozzles fit for 3D Printer -10, -2/ / pro/ -5, Anet A8, Reprap, Prusa I3, and so on. Compatible with the most common 3D printer. [Package Include]Printer nozzles come with 5 pieces MK8 nozzles, 0.4mm in output diameter, 1.75mm in input diameter. Note: This product contains and is not suitable for children aged 3 and under. Beware of swallowing. Colour: black Material: hardened steel Package Contents: 5 * 0.4mm hardened steel MK8 nozzles Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.