Features APPLICABLE MODEL: This build plate is round shape with the diameter of 309mm, suitable for Flsun V400 and other 3D printers of the same size. FLEXIBLE STEEL MADE: The platform is made of spring steel, which will not kink or warp when slightly bent, with high strength and heat resistance. PEI COATING: The spring steel plate is sprayed with double sided PEI, frosted texture makes it easier for the material to adhere to the surface. EASY REMOVAL: Both sides can be used, and the printed mold can be easily removed from the platform by slightly bending. HIGH FLATNESS: The flexible steel platform provides a flat construction surface, ensuring a high flatness of the printing bottom. Specification: Item Type: 3D Print Bed Plate Material: Spring Steel, Soft Magnetic Diameter: Approx. 309mm/12.2in Package List:1 x PEI Plate1 x Magnetic Base Note:PEI flexible steel platform is pre attached, there is no need to worry about air bubbles. Please remove the protective film from the surface of the PEI before use. Package List 1 x PEI Plate 1 x Magnetic Base