Please choose the size you wanted 220 220mm 235 235mm 310 310mm Advtanges ● 220 220mm 235 235mm 310 310mm three size for choose● Easy to get the first layer even for a new user● Flexible Removable stick to magnets very well● The magnetic base can stand the high temp at 140C without losing magnetism suitable for almost all filaments PLA ABS etc ● Free clean just flex the plate a little then take the prints off after cooled● Fast heater performance less waiting time after printing ● For most 3D printer hotbed Material Introductions ● 100 real Ultem1000 PEI amber color matte surface 0 125mm thickness ● This spring steel sheet is flat flexible stainlessstick to magnets very well 0 5mm or 0 4mm thickness● PEI is 3m 468MP tape pre applied free bubbles How to use ● After apply the PEI sheet on our special spring stainless steel sheet You can simply use 4 clips or magnets to hold it on the heatbed then enjoy the printing ● Easily remove 3D prints on printer by removing the spring steel plate flexing it and popping the print off Its simple and makes the print removal process much easier Package Included 1 x PEI Build Surface 1 x Spring Steel Plate 1 x Magnetic Base Heated Bed Sticker