Standard Steel Hand Stamp Set, 1 4 in, Letter and Number Set ORS NASCO [Nom] 4 1 2 in Grit 46 [Nom] 4 1 2 in Grit 46 Hazmat NO Jan San Catalog NO Mounting Center Mount Prop 65 NO Quantity 25 per pack Quarterly Flier NO Special Order NO Speed [Max] 13 Self locking on pipes and nuts Won't slip off the workpiece Gripping surface with special hardened teeth (61HRC) Wear resistant and grips any shaped object Thin head fits into tight places Standard high quality stamps for general purpose use For hand held hammer struck applications Crowned striking surface ensures full force to the center of the stamp and textured shank provides firm easy grip