Product Description : Beadalon Bead Crimper Tool for Jewelry Making - Use Pliers with Beading Jewelry Wire and Crimp Beads or Tubes for Professional Designers and Makers of Necklaces and Bracelets, Standard To make beaded jewelry, you need 3 essentials: Flexible beading wire for stringing all types of beads, gemstones crimp Beads or crimp Tubes are soft metal beads (round or tubes) used in place of knots to secure clasps and beads onto un-knottable stringing material such as beading wire A crimp Tool is the must have for professional finishes to attach and secure the clasp California Prop 65 Warning : This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information visit to the website.