Totally 30sets jewelry making clasps for leather cord style jewelry making Great DIY accessories for necklaces,bracelets ,anklets and other fashion jewelry making,also attractive garments ,bag sewing crafts embellishments. These clasps can help you link jewelry easily, just link each side with your jewelry is fine,the magnet part with LINK together . Fashion shape and Light weight, it is very professinal accessory for jewelry design, repair , replacements and decoration. Classic tube shape and silver colors suit for most jewelry. Specification: Material: Stainless Steel Color: Silver Size Chart: Inner Size: Approx. 1 mm/ 0.04 inch Inner Size: Approx. 3 mm/ 0.12 inch Inner Size: Approx. 1.5 mm/ 0.06 inch Inner Size: Approx. 2 mm/ 0.08 inch Package Includes: 30 Piece Jewelry Making Clasps Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size.