CUSTOM SIZES: Includes four mandrels to make jump rings in precise sizes: 10mm, 12mm, 14mm, and 16mm. Whether you're working on delicate crafting stylish connectors, this set gives you the flexibility to create exactly what your project requires, no more searching for the right size in stores. EASY TO USE: Effortlessly coil wire into smooth, consistent spirals using the included mandrels. Perfect for making uniform rings that add a professional touch to earrings, bracelets, and necklaces. Compatible with most wire types, including sterling silver, gold-filled, colored craft wire, and base metals. CREATIVE DESIGN: Try coiling vivid, colored wire to create jump rings that add a pop of color and textural interest to your jewelry pieces. You’re no longer limited to silver and gold use your creativity to bring your designs to life with custom accents. PROFESSIONAL QUALITY: Crafted for jewelry makers who value precision and repeatability, this durable toolset is a reliable staple for hobbyists and professionals alike. Pair with a cutting tool to complete your jump rings and always wear safety glasses for a secure, stress-free experience. PERFECT GIFT: Whether you're shopping for a beginner or a seasoned crafter, this jump ring maker set is a thoughtful and practical gift. Packaged compactly, it's a fantastic addition to any jewelry-making toolkit, perfect for birthdays, and holidays.