12 Pieces Of Dura Snap Upholstery Buttons For Use In Many RV, Trailer, Auto, and Bus Interior Panels. These are made of marine grade vinyl so they can be used on inside or outside projects and this vinyl color is navy blue. Buyer has choice of the two different sizes that are available in dura snap buttons which are #30 which is 3/4" in diameter or about the size of a penny and #36 which is 7/8" in diameter or about the size of a quarter. Buyer also has choice of 3/4" long or 1 1/2" long screws. All screws are made of stainless steel for added durability. All button orders ship within one working days and shipping is free to anywhere in the USA via First Class Mail.