Metal Stamps, Metal Stamping, Dot Rin Stamps, Rin Stamps, Air Hammer, Air Hammer Parts, Air Hammer Replacement Parts, Manual Stamp Holders, Stamp Holders, Stampholder, Letter Sets, Stamping Symbol Set; Dot RIN stamps, year stamps, multi-line stamps, symbol stamps & letters & numbers applied to cylinders & other steel surfaces with air hammer. Standard & custom steel stamps for standard, heavy duty & low stress applications ...