High Thermal Conductivity Uniform Heating: 360 surround ceramic heater improves heating efficiency, more uniform heating and faster heat transfer. High Flow Support High Speed Printing: The overall hot melt section is enlarged and the length is up to 28.5mm, supporting 600mm/s high-speed printing. All-metal Heat Break with High Temperature Resistance: Up to 300 , All-metal design, and the nozzle is made of copper alloy and hardened steel to hardness while supporting high-flow printing, compatible with more filaments, such as PLA, ABS, PETG, TPU, PA, PC, PLA-, PA-, PET-, etc. Processing Upgrade for Better Printing: The heat break is made of titanium alloy and copper, with an extremely thin wall thickness and excellent heat insulation performance. Nozzle inner wall roughness RaO.4, smoother feeding. Applicable for: This x Ceramic Heating Block Kit is suitable for K1 and K1 Max 3D Printers. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you Compatible models: K1 / K1 Max Nozzle diameter: 0.4mm Applicable filaments: PLA, ABS, PETG, TPU, PP, PC, PL A-, PA-, PET-, etc. Support Filament Diameter: 01.75+0.05mm Ceramic Heating Power: 60W Colour:Photo Color Material:Silicone Package Contents: 1 x Hot End Kit 4 x Nozzles Only the above package content, other products are not included. Note: Light reflection 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.