Wide application: Suitable for the charm earrings, necklaces and bracelets jewelry accessories, they also can be used to compatible with leather, suede, tassel, lace and more. They will add extra shine to your jewelry crafts design. Easy to operate: Just insert the end of your cord into the cord end, and clamp it tightly with pliers, or put a little glue on to make it firmer, lobster clasps are easy to open or close, then connect it with the jump rings and lobster clasps. Suitable sizes: As picture shows, the lobster claw clasp size is 12mm×7mm, the hole: 1.7mm; The jump ring is 5mm in diameter, 0.7mm thick; The crimp end tip is 9mm×4mm, the hole: 2mm. Please refer to the picture for specific sizes. Reliable material: The lobster claw clasps, jump rings and crimp end tips are made of metal, well polished and smooth surface, skin-friendly, lightweight and safe to use, not easy to fade, can be applied for long time. Abundant quantity: Package comes with 100pcs lobster claw clasps, 200pcs open jump rings and 200pcs fold over cord end tips, 500pcs in total. The jewelry making accessories kit will help you to make various jewelry crafts.Batteries required: No. Finish types: Polished. Best Sellers Rank: #94,422 in Arts, Crafts & Sewing. Customer Reviews: 4.1 4.1 out of 5 stars 18 ratings 4.1 out of 5 stars. Item model number: 0040. : B09CKDCYJY. Manufacturer: Hmjpng. Item Weight: 1.1 pounds. Package Dimensions: 4.69 x 2.83 x 0.47 inches. Finish Type: Polished. Number of Pieces: 500. Brand: Hmjpng. Style: Open Jump Rings. Color: Silver. Material: Silver, Leather.