Features: High thermal conductivity ceramics have high temperature resistance and faster speed The 360 surround ceramic heater improves heating efficiency, providing more uniform heating and faster heat transfer. The insulation board is titanium alloy andcopper, with extremely thin wall thickness and excellent insulation performances. The roughness of the inner wall of the nozzle is less than Ra0.4, making the feeding smoother Applicable filaments: PLAs, ABS, PETG, TPUs, PP, PC,PETCF, etc. Easy installation: With a simple installation design, users only need to perform simple operations to complete the installation. Specifications: Material：Metal Size： Mixed For: K1/K1Max Upgraded Hotend Kit Package Includes: 1Set Hotend Kit note: Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you