Micro Swiss Plated Copper MK8 High Temperature Heater Block Upgrade for CR10 / Ender 2 / Ender 3 / ANET A8 Printers MK7, MK8, MK9 Hotends This Micro Swiss plated heater block upgrade is built from a high-temperature Copper Chromium Zirconium that allows you to reach temperatures up to 500°C. This special alloy retains its strength…