Features 1、APPLICABLE MODEL: This hot end print head extruder kit is compatible with for Kobra 3 3D printer, very useful and versatile, possess stable structure, excellent performance and long service life 2、ALL METAL FLUENT INSULATION: The extruder kit consist of hardened steel and Ti alloy insulation parts for better heat dissipation. The throat is tightly integrated with the heating block, and the throat structure is upgraded. The step limit is added at the fitting point with the heating block, which reduce the situation of material leakage and shedding 3、SIMPLE INSTALLATION: Remove the old hot end and install the new hotend to start. (heating tube, thermistor, nozzle etc., are pre installed) 4、HIGH SPEED WITHOUT CLOGGING: Special design, the print head is heated evenly, the inside of the nozzle is flat without burrs, not only reduce resistance, prevent consumables from blocking, but also support high speed printing 5、FLUENT WITHOUT BLOCKAGE: The roughness of the inner wall of the throat and the inner wall of the nozzle is Ra 0.4, the throat is Ti alloy, and the wall thickness is 0.25mm, which reduce the blockage and improve the printing quality Specification Item Type: Hot End Print Head Extruder Kit Material: Hardened steel and Ti alloy Support Printing Materials: PLA, ABS, PETG, TPU, PP, PC, Nylon, PEEK, PEI, etc. Application: For Kobra 3 3D printer Package List 1 x Extruder Kit 2 x Accessories