What you get: 12 x hardened steel nozzles, 9 x stainless steel nozzles, 36x brass nozzles, sufficient quantity to facilitate your timely replacement, achieving quality printing and reliable: Nice abrasion resistance, heat resistance and resistance, suitable for 3D printing at high temperature, sturdy construction making them to you for long time High precision: the inner wall of the 3D printer extruder nozzle is smooth and has no burrs, its viscosity coefficient is small, and extruder nozzle diameter error is less than 0.02 mm, providing you an accurate and smooth extrusion Good performance: this MK8 nozzle has impressive toughness and hardness, not only suitable for common 1.75 mm 3D printer filaments, but also can be applied for printing filaments of carbon fiber, fiberglass, etc. Compatibility: these high temperature pointed wear resistant nozzles are compatible with MK8 hotend for printers, compatible with -2/ -3/ -3 pro/ -5, also compatible with -10 all-metal hotend, Prusai 3, Anet A8, Reprap and so on Material:Metal colour:Picture color Package Contents: 12 * hardened steel nozzle 9 * stainless steel nozzle 36 * brass nozzle 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.