Compatible models: K1, K1 Max, CR-M4, Ender 3 V3 KE. High Speed Printing The K1 nozzle kit has a high thermal conductivity of copper alloy, which requires high flow rate for high-speed printing. Upgrade High Temperature Resistance, Precision Craft The copper alloy nozzles can withstand high temperatures up to 500 C, and the hardened steel nozzles can withstand high temperatures up to 450 C.
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