●【CR original accessories 】compatible with Ender 3, Ender 3 pro, Ender 3 Max, Cr-10, Cr10s, Cr10 v2, Ender 5, Anycubic i3, and other Bowden Drive based 3d printers. ●【Fine workmanship】 inner diameter : 2mm, outer diameter : 4mm, and the 175mm filament can pass through the Teflon tube unimpeded to achieve the smoothest extrusion effect. ●【High temperature resistance】TheTeflon tube can withstand the maximum working temperature of 260 ℃, so you dont need to worry about it melting and deforming under the high temperature of the printer and damaging your printers. ●【More nozzles】Weve added 4 sized matching nozzles to our Teflon tube kit so youre ready to use. ●【Professional after-sales】We provide professional after-sales customer service. If you have any questions during installation and use, please feel free to contact us.