Steel Honeycomb: The Honeycomb grid is made from steel. Unlike it's aluminum counterparts, this unit gives you the option to hold your materials down with strong magnets to ensure that they do not move during cutting or engraving.
Strong Frame: The honeycomb grid is hardened and painted black, which makes the honeycomb grid stronger than other brands of honeycomb. Fireproof and rustproof. The edges are riveted together so it won't come loose over time like screws do.