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. 5.Drop-in replacement for the hotend of the K1 / K1 MAX and - printer. Can be direct installed on Sprite Extruder to increase flowrate by 50%. Name: HOTEND KIT It made of better material, a higher flow rate and an easier maintenance design. Colour:silver Material:Metal type:A: -OT for SpriteE Package Contents: 1 x updated KIT 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.