MICRO SWISS M2 HARDENED HIGH SPEED STEEL NOZZLE - MK8 The M2 nozzles are designed for high temperatures, abrasion resistance and with superior non-stick properties. Nozzles are machined from M2 high speed steel, hardened and tempered to 68 HRC, plated with Electroless Nickel Plating, and coated with WS2 coating. The M2 nozzle can operate up to 450C without losing the hardness. M2 Hardened High Speed Steel: 68 HRC Plating: Electroless Nickel Plating Hardness: 70-73 HRC Coating: WS2 coating Coefficient of friction: 0.035 Orifice size available: .4mm, .6mm, .8mm Made in USA by Micro Swiss Limited lifetime warranty against wear Fits Alfawise U20 Alfawise U30 Anet A8 BQ Prusa I3 Hephestos BQ Witbox CraftBot 2 CraftBot PLUS CR-10 CR-10 V2 CR-10 MINI CR-10-S4 CR-10-S5 CR-10S Ender 2 Ender 3 Ender 3 V2 Ender 3 Pro Ender 3 Max Ender 5 Ender 5 Plus Ender 5 Pro Ender 6 Flsun QQ-S Geeetech A10, A20, A30 MakerBot Replicator 1 MakerBot Replicator 2 MakerBot Replicator 2x MakerBot Replicator 5th Gen MakerBot Replicator Mini MakerBot Replicator z18u200b Micro Swiss All Metal Hotend for CR-10 (M2583-04) Micro Swiss All Metal Hotend for CR-10s Pro (M2591-04) Snapmaker 3-in-1 3D Printer Tevo Tornado TronXY X5S