JUMP RINGS FOR JEWELRY MAKING: jewelry repair kit comes with totally 4600 pieces of jump rings in 5 sizes and a jump ring opener tool. Large quantity and nice assortment for jewelry making supplies and jewelry repair. QUALITY: The closed jump rings are made of lead- metal that is and durable for use. All the jewelry jump rings are thick and sturdy and line up perfectly.ASSORTED SIZES JUMP RINGS: These gold jump rings are in sizes 4 mm, 5 mm, 6 mm, 7 mm, 8 mm. A nice variety of different sizes to meet your craft projects.HELPFUL JUMP RING TOOL: The necklace repair kit includes a jump ring opener finger tool so you can easily open and close the jump rings to fix your earring hooks, necklace and other jewelry supplies.HANDY BOX CONTAINER: All the jewelry jump rings are properly packaged in separate compartments for the different sizes, the case makes the small jump rings keep neatly in individual spaces to avoid messes Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.