Highlights90 Pre assembled with Stable Triangular StructureLONGER LK5 Pro is a large affordable 3d printer with a 90 Pre assembled printing size of 300 300 400mm With dual inlined rods to hold the z axis as a steady triangular structure for a better quality of 3d printing And it s 90 preassembly in the factory before delivery which will be easier to assemble together and save more time Quiet Printing and Open sourceThe LK5 PRO is integrated with 3kits of TMC2208 chipsets for the X Y Z axis for quiet printing which will be reduced noise from the motor Developed with an open source mainboard for LK5 PRO it will be easier for you to add an optional spare part onto the 3d printer such as BLTouch for auto leveling or upgrade with Marlin 2 X version for the beta test 4 3inch Full Colr Touch ScreenThis FDM 3d printer is built with a 4 3 inch full colr touch screen and integrated with a better friendly user interface for better interaction with the printer simple operation and an easy approach to checking the printing process Upgraded Glass Bed EquippedThis FDM 3d printer is equipped with an upgrade ceramic coating glass for easily peeling off from the bed when the printing is finished High temperature Resistant Tefln TubeThe LK5 Pro is equipped with a high temperature resistance Tefln tube to stand up to 280 degrees and it s not easy to clog inside the nozzle and will provide constant quality printing