Features: Made of high quality stainless steel material, never fade, no allergy. The diameter of the silver stainless steel ball chains beads is 2.4mm/0.09inch, which is very suitable for DIY jewelry supplies. The silver stainless steel ball chains wraps around the reel, preventing knots and easy to use, just rewinds it back to the reel when not in use. Wide Application: Great for ball chains necklaces, dog tags necklaces, dog tags chain necklaces, beaded chain necklaces, anxiety necklaces, desire necklaces, keychains, zip extensions, earrings, bracelets, anklets, body chains, extension chains, layered choker necklaces and more. Set includes: 1 roll ball chains, 20 pcs buttons. Specifications: Material: Stainless Steel Bead Diameter: Approx. 2.4mm/0.09inch Chain Length: Approx. 10m/32.81ft Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 roll ball chains 20 pcs buttons