Compatible Printer: This hotend kit replacement is compatible with for S1/Combo/ Pro FDM 3D printer. Package Included: 1 set 0.2MM hotend kit + 1 set 0.4MM hotend kit + 1 set 0.6MM hotend kit (heater , thermistor, heat block,throat tube, nozzle, silicone cover) Nozzle and hot block: The seamless connection between the nozzle and heat breakage accelerates the nozzle to dissipate heat, and the heat breakage to insulate, and releases the nozzle blockage. Simple Installation: Remove the old hot end and install the new hotend to start. (Heating tube, thermistor, nozzle etc are pre-installed) Filament material: The print head for S1 works with 1.75 mm PLA/ABS/PETG/TPU/Wood filament. Colour:As Shown Material:Hardened Steel Notice: It's not suggested to replace the nozzle at your side which be broken easily when replacing. Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 set * 0.4MM hotend kit 2 * Silicone Cover 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.