Vintaj nickel-free arte metal decorative rivet embellishment is 19mm across. The beautiful design of this deco rivet can be brought out with the Vintaj Reliefing Block. This item features a decorative face with two posterior prongs. Decorate any material by simply pushing the rivet ends into your material and fold over. Also, use needle nose pliers to turn the rivet points into loops for use in jewelry designs. Use it with leather, or in other ways, such as in the necklace below, designed by Betsy Kaage.