This Set of Bar Grounder Stamps is new and produces very crisp impressions. Stamped on the tools is "LS.A101-1", "LS.A101-3", "LS.A101-5", "LS.A101-7" & "LS.A101-9". The impressions measure from 1/16" to 7/16" in length. This tool set will be a great addition to any leather craftsman's collection. This tool set should not be struck with a weighted maul since they are made of a lighter weight metal alloy.