1、Double Sides: One side is spring steel plate with pre applied PEI surfaces, and the other is magnetic rubber base with adhesive. 2、Reliable Use: Place the PEI side up, and the maximum temperature for printing on the bed is 130℃. When the temperature of the hot bed is around 60℃, you can print directly on the PEI sheet without using any glue or other tools to help the model stick to the sheet. You don't need to worry about curling your prints at a bed temperature of 60°C. It can also print PETG well, but the temperature of the hotbed needs to be around 80-85℃. 3、Easy Removal: When the temperature of the hot bed get room temperature, the print can easily fall off. If the print is still stuck, gently flexing the plate will help remove it. 4、For Printing: The flexible spring steel plate with a large size of 310mm x 310mm enables easier printing with higher efficiency. 5、Good Matches: Allows for extensive application on for CR 10, for CR 10S and other 3D printers with the same size, very practical.