Nailheads Spots Studs 2 Prong 13MM (1/2") Round; Steel with Nickel Finish; 100 Pcs 100 pieces 13MM (1/2") Big Round Studs; 2-Prong; superior bright mirror nickel finish. Highest Quality, Heavy Duty Solid Steel; MADE IN THE USA. Fit standard dies, or are easily set by hand on leather and fabrics: cut small slit, insert prongs and bend over Great for biker gear, belts, leather jackets and wristbands, dog collars, bike ornaments, etc.