1、Double Sided Design: This flexible spring steel plate has a double sided design. The frosted texture makes it easier for the substrate material to adhere to the PEI surface. Using double sided PEI spring steel sheet with strong adhesion. 2、Good Flatness: The flexible spring steel plate is glue free and tape free, with strong adhesion of PEI sheet, no scratching, bending can easily remove the printed material from the plate, and high flatness. 3、Removable: Flexible spring steel plate can be well adhered to magnetic materials. No kinking or warping when slightly bent, high strength and heat resistance. Both sides can be printed more easily. 4、Easy to Install: Flexible spring steel plates are easy to install, simply attach the magnetic flexible spring steel base plate to the heated bed and place the steel plate on top. 5、Sturdy and Practical: The flexible spring steel plate is 215mm (8.5in) diameter . It can be reused many times, just wipe with isopropyl alcohol (not included) between prints to get excellent results, sturdy and practical.