10 pieces in package, enough quantity for your DIY demands. Sizes: 0.43x0.18inch, tiny but strong. Fashion barrel screw clasps, made from alloy, fine workmanship, durable and long service life. Easy to tighten to avoid losing your jewelry. Perfect for creating jewelry craft making or repairing your jewelry, necklaces, charm bracelets, anklets, collar choker, etc Specification: Treatment process: Electroplating Material: Alloy Size Chart: Single Size: 11x4.5mm/0.43x0.18inch Package Includes: 1 Bag of Jewelry Buttons (10 Pieces) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!