1、SMOOTH PEI AND TEXTURED PEI BUILD BOARD: One side is a black smooth PEI print bed surface, the bottom of the print model is smooth, and the model is easy to disassemble and clean. On the other side is the black PEI frosted surface board, which give the frosted sticker surface a unique frosted touch, providing greater adhesion and printing without warping2、HIGH TEMPERATURE RESISTANCE AND COMPATIBLE FILAMENTS: The smooth print bed surface is resistant to high temperature 260℃ and textured PEI coating bed is 300℃, and is good to print PLA, PLA+, PETG, PETG CF, ABS, TPU, Nylon, PC, PA, ASA, PVA on PEI surface3、EXCELLENT ADHESION FOR FIRST PRINTING LAYER: The model can be firmly attached to the surface of the print bed. Easily print even for a newbie. The textured PEI flexible construction board has good adhesive force, even sticks well without heating the platform, with no glue required. Allow the build plate to cool before removing the model to avoid damaging the coating4、EASY TO REMOVE AND USE: The sheet can be bent to remove the model quickly, without the help of other tools. And the plate will return to flatness. Flexible, removable, possess high strength and heat resistance, dual side design, thicker and more long lasting, easy to use5、COMPATIBLE 3D PRINTERS: The double sided smooth PEI textured PEI print bed is suitable for 3D printers with 310x315mm platform size, such as suitable for k1 maximum