Simply punch or drill a 1.6mm hole into your pieces, and use a ball peen or chasing hammer to do the rest. It's fun, easy and addicting, you can rivet Vintaj charms, pendants, beads, flattened bead caps, hardware and findings to the Altered Blanks (each sold separately) for a unique layered look. Decorate metal, jewelry, paper goods, chip board, grunge board, wood, leather, acrylic, textiles, foil, canvas and more. Stamp, impress, texture, fasten, hang, link, layer, bead, string, suspend, hammer, flatten, rivet, cluster, glue, alter, ink, paint and more to create all types of projects! Each package includes 40 - 1/4" Nail Head Rivets.