Features: brand new and high quality Durable and portable: These jump rings are made of stainless steel, which is durable and sturdy, not easy to rust, won'for t do any harm to your skin. Lightweight for you to carry and store, bring you much convenience. Fashion and practical : It is simple and practical tool for jewelry making and perfect for beading making and DIY earring. You can also wear it on your hand as a decorative ring, and the chic design will bring you an exquisite effect. How to use: To use, simply grip jumpring on opposite side of opening with needle-nose pliers, insert open side of jumpring into one of the closing tool slots and twist. Same motion opens and closes rings. Multiple function: Apply the jump ring opening tools on different DIY projects, such as jewelry making, jump ring opening and closing, necklace repairing and so on; You can also match the ring with your other decorative accessories, making you stand out in crowds. Unique design: There are four groove of different widths, for auxiliary open different thickness circle ring. Specifications: Material: Stainless Steel Size: Approx. Thickness 1mm/0.04 inches , Width 8mm/0.31 inches,Diameter 17/18/19mm/0.67/0.71/ 0.75inches Style: Diameter 17mm/0.67inch, 18mm/0.71inch, 19mm/ 0.75inches (Optional ) Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflec0.75 the actual color of the item. Package includes: 1 Piece Jump Ring Opener