Nailheads Spots Studs size 20/107 4-prong 3/16" (4.5mm) Round with 6 facets; Brass with Bright Gold Finish; 100 Pcs 100 pieces 4.5MM (3/16") Round faceted studs with 4 bendable prongs, style #20/107 Highest Quality, US Made; Brass base, bright gold finish Fit standard dies, size 20, or are easily set by hand on fabrics by pushing prongs through and bending over