This Creality 3D Sermoon D3 PEI Platform Board Kit is an original replacement part for your 3D printer. You can use this as a replacement for your current build plate or as an additional build plate, so you can quickly start your next print. The building plate is made of spring steel with a PEI coating and is 320 x 283 x 0.5 mm. This product is suitable for the Sermoon D3 3D printer from Creality 3D.