Excellent Performance: This upgraded hotend kit is only compatible with for P1P P1S 3D printer. The heating block has been upgraded to chrome zirconium copper nickel electroplating treatment, with high temperature resistance of 500 degrees Celsius printing and fast thermal conductivity(NOTE: This hotend not for X1 Series as the ceramic heaters and thermistors for them are different for P1 Series) Smooth : The inner wall roughness of the throat tube and the inner wall of the nozzle is Ra 0.4, and the inner wall of the throat tube and nozzle is smooth, which reduces clogging and improves printing quality Super Material: This nozzle is made of hardened Aluminum material, the max temp could reach 500c, and the hardness is over HRC60 can reduce the abrasion to the inner and outer of the nozzle during long-time printing, achieving high-quality printing Titanium Alloy Upgrades: The heating block is connected to the radiator through two gold alloy screws to prevent the throat from bending and breaking during high-speed printing Upgrade Nozzle Structure: The heat block and the nozzle are threaded, and the nozzle is in contact with the bottom step of the throat to firmly solve the problem of falling off and reduce the possibility of material leakage. The detachable nozzle reduces the cost of use Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you ! Colour:Photo Color Material:Aluminum Package Contents: 4x Hotend 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.