Features: 1.DOUBLE SIDED: 310x310mm PEI sheet consists of two parts, including a flexible steel platform coated with PEI surface and a magnetic backing with adhesive on the back. Flexible and removable, not easy to deform. 2.EASY TO STICK AND REMOVE: No other tools are required and the magnetic build surface provides premium adhesion. Easy to attach and remove prints, just bend it a little and it pops right out. 3.HIGH COMPATIBILITY: PEI sheet is compatible with PLA, PETG, PEEK, ABS and other filaments, widely compatible with for MEGA X, for CR 10 CR 10S, for evo Tornado, for Nereus E12. Can withstand numerous heat cycles. 4.PREMIUM MATERIAL: Made of premium spring steel, PEI golden matte surface has strong high temperature and high printing stability, flame retardant, high temperature resistant and high strength. 5.EASY TO INSTALL: Simply stick the magnetic sheet to the heated bed and place the flexible PEI build plate platform with PEI surface on top. The surface of the magnetic sheet holds the flexible base very tightly. specification:Item Type: PEI Sheet Material: Steel Size: Approx. 310 x 310mm / 12.2 x 12.2in Applicable Range: All 300 x 300 Or 310 x 310 3D Printers PackageList:1 x PEISheet NoteManual measurement, please allow some errors.