1.Planar contacts heating Elements have a more certain contact than ceramic heating ring contacts 2.compared to the OT hotend heating elements and thermistors are easy to maintain and replace 3.Separate design of fixed flange and heating core. The flange is made of a material with a low thermal conductivity to reduce the working temperature of the heat sink fixed with it by screws. 4.Compatible with MK8 series nozzles that are readily available.Drop-in replacement for the hotend of the K1 / K1 MAX and - printer. 5.Can be direct installed on Sprite Extruder to increase flowrate by 50%. Compatibility: For K1/K1 max - it is drop-in replacement. For other sprite extruder-equipped printers, the overall height may be 10MM higher with this hotend installed, so you need to use the printparts to move the -TOUCH and 4010 cooling fan down 10MM. It made of better material, a higher flow rate and an easier maintenance design. Material: metal colour: As shown Package Contents: 1 set x hot end