For finishing a necklace or bracelet with a professional touch, use this 925/10 silver-filled cable and stringing thimble with a .031 inch hole. These findings are designed to protect your jewelry wire from fraying as it rubs against metal clasps, and this 925/10 silver-filled component has that extra high-quality feature. The component is made of 10% silver, compared to 925/20 silver-filled which is only made up of 5% silver. The silver is mechanically bonded to a brass core for a sturdy structure, allowing you to create incredible pieces that have that perfect professional look. This thimble hole is .021 inches allowing you to use it with jewelry wire up to 21 gauge or .028 inches.