Brass nozzle: cost-effective.Electroplated copper high nozzle: corrosion resistance, high temperature resistance, durable, suitable compatible with high temperature 3D printing processed by other nozzle methodscompatible with Volcano nozzle: high temperature resistance, wear resistance, non-stick, good durability, suitable compatible with printing PLA /ABS/TPU/PA/PEEK/PE, carbon fiber glass and all other materials, etc.Super-fine to super-fat layering, you'll be making stronger, faster and bigger prints with compatible with the Volcano HotEnd PowerUpThese nozzles are immediately compatible with compatible with the Lulzbot Moarstruder Many RepRap 3D printers including the Prusa i3 can be upgraded with compatible with VolcanoSpecification: 0.4mmColour: GoldMaterial: copperSize: 21 x 7mmPackage Contents:10 x nozzleOnly the above package content, other products are not included.Note: Light shooting 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.