For K2 Plus Ceramic Heating Block Kit is an all-metal integrated design, facilitating quick disassembly and convenient replacement. Uniform Heating: Excellent heat distribution and thermal insulation properties uniform heating of the printing , 360 Surround Ceramic Heater improves heating efficiency, heating more evenly and transferring heat faster. Upgraded Material: The heat break is made of titanium alloy, which reduces heat conduction The nozzle is composed of copper alloy and hardened steel, supporting the printing of filaments such as PLA ABS PETG TPU PP PC PLA- PA- PET-. High Flow Rate: Enlarge the nozzle chamber, the maximum flow rate can reach 32mm/s, and support 600mm/s high-speed printing,Burr-free orifice, not easy to clog the material, stable printing. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:As Shown Material:Hardening steel Package Contents: 1 * Hot End Kit 4 * One Piece Nozzles(0.2+0.4+0.6+0.8mm) 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.