This 5" x 10" unbreakable, stainless steel inking slab is sturdy and hard to scratch. It is easy to clean and keeps the ink smooth. Because it is unbreakable, this steel slab is recommened for use in jails or other areas where criminals are being fingerprinted. The Steel Slab has a plastic protective sheet to protect the slab from scratches and dents. Before fingerprinting, this sheet needs to be removed.