Cheap cht nozzles are fully made out of brass and the insert is fake

Best 3D Printer Nozzle: Types, Sizes & Materials

For Ender 3 V3 SE Nozzle CHT Brass Clone Hardened Nozzles For Ender 7 Ender 5 S1 Series Extruder Nozzle High Flow - AliExpress

Bondtech CHT Nozzles optimize hotend output by splitting incoming filament into 3 strands, heating the core of the filament, and accelerating flow by

Bondtech CHT Coated Brass Nozzles

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Bondtech CHT BiMetal Vol Coated Nozzle for High Flow

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Testing a $2 High-Flow nozzle from Aliexpress — CNC Kitchen

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When to change your nozzle? : r/prusa3d

Threaded Inserts for Plastic — Kingroon 3D