The PEI build plate from 3DHUB CANADA consists of two parts: -A smooth & powder-coated PEIspring steel printing platform - A magnetic base plate with the 3M adhesive sheet Width (X) x Length (Y): 250mm x 250mm WARNING: Never clean the Textured PEI Powder-coated spring steel sheet with acetone! Doing so will create microfractures in the PEI texture, which will make the surface deteriorate over time.