These 48" Airport Stencils are made to meet the specifications for FAA airport standards for character markings, used on runways, taxiways, and aprons (Page: B-1 - AC No: 150/5340-1M). These airport stencils areavailable in the individual alphabet letters A-Z, numbers 0-9, a dash, a comma, and an arrow, individually or as a complete set.All 1-800-Stencil’s are professional quality and made from either Light or Pro-Grade LDPE, Aluminum, or optional UHMW plastic to all last for years of professional use.