SterlingSilver 2mm x 2mm crimp tubes. They are great for making medium tolarger sized beaded jewelry. Best if used with with the .014 inch to.018 inch size Stardust Wire or Beadalon Wire. Just thread thebeading wire through the hole in the crimp tube make a loop and goback down through the tube. You can either smash the tube tightlyflat with your pliers or you can use a crimper tool to close it. Putall your beads on the stringing wire then repeat with the crimp onthe other end. Add a clasp and your jewelry is finished. If you wouldlike to cover the sterling silver crimp, you may use sterling silver3.2mm crimp cover. To keep the end loop safe made by beading wire on theend, you may use sterling silver Wire Savers.