12 Pieces Of Dura Snap Upholstery Buttons For Use In Many RV, Trailer, Auto, and Bus Interior Panels. Buyer has choice of listed colors. These are #30 size buttons which are 3/4" in diameter or the size of a penny. All buttons include studs and 3/4" 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.