This is a 400x440 Aluminum base plate for the X301 LayerFused Printer. The plate is .063" (1.6mm) thick with the holes laser cut for precision. The brushed aluminum finish is an improvement over rough aluminum finishes from many local sources. The laser cut holes mean you save time in your construction of your printer.
Please note that the finish on these varies, while the surface is brushed it is not polished and some surface imperfections may still exist.