This listing is for a set of 2 cool art deco-styled side markers. They use beehive type lenses (2.5 inches) which are included in this listing. They are plastic. They're made from stainless steel and measure approximately 5 inches wide and 3 inches tall. There were found on trailers in the 1930s-1950s and were probably a catalog item that trailer manufacturers would order. You will receive 2 - (2 markers and 2 lenses).