The Beadsmith Basic Elements crimp tubes and smooth covers can be used with wire and flexible wire and are almost identical for crimp beads. This package comes with crimp covers that are made to look more like a spacer bead, so your finished product looks perfect. To use these properly, you should also use flat nose pliers or crimping pliers. This will allow you to smash the crimp or fold it onto the wire to hold it in place. These jewelry making supplies help to create earrings, can be used with necklace string or cord, and can be used with beads for bracelets. Combined with beads for jewelry making and the proper wire for jewelry making, and you will be able to complete any DIY design you can come up with.Details:Gold plated48 piecesContents:24 crimp tubes (2mm, 1.5mm inner diameter)24 corrugated covers (4mm open, 2.75 closed diameter)