14K Gold Filled 2mm x 2mm crimp tubes with 1.5mm inside diameter. They are great for making medium to larger sized beaded jewelry. Use these crimp tube beads with 0.012 inch to 0.018 inch Stardust Wire or Beadalon. Just thread the beading wire through the hole in the crimp tube make a loop and go back down through the tube. You can either smash the tube tightly flat with your pliers or you can use a crimp tool to close it. Put all your beads on the stringing wire then repeat with a crimp on the other end. Add a clasp and your jewelry is finished. If you would like to cover your crimps and to give that designer's end fine quality finish, than use 3.2mm either plain or fancy crimp cover as 3.2mm fits 2mm x 2mm crimp just perfectly fine. We do carry variety of crimp covers in different styles and different sizes. At the end, these days everybody likes to use Wire Savers as they keep your jewelry piece secure for very long time by protecting the wire loop that is made on every end of the piece where it connects to clasp. If you are going to be making quality jewelry piece than make sure you are buying quality product. We guarantee our merchandise and it's quality. Make sure you use Stardust Wire as it is top of the line, made in Germany fine quality wire with high flexibility. Stardust wire is available in 49 strand and 19 strand from sizes 0.010 inch to 0.024 inch in clear, gold plated and silver plated.