Check Your Ring Size and Design First This ring expander tool works only for US ring sizes 6 to 15. It is not suitable for very thin bands or fragile designs. We recommend stretching no more than one size. Always proceed with caution to maintain the integrity of your ring. READ BEFORE BUYING TO AVOID DAMAGE ⚠️ This ring stretcher is for SOFT METALS ONLY (Silver, Gold, Copper). It BREAK rings made of Titanium, , Stainless Steel, or any ring with stones (Diamonds, Gems). Kit with Protective Rubber Mallet Crafted from high-quality stainless steel for lasting performance. The included double-faced jewelry rubber mallet provides non-marring strikes, making it safe for reshaping deformed rings and performing ring repair on compatible soft metals without causing scratches or damage. Precise & Safe Resizing for Compatible Rings When used correctly on appropriate metals, our tool kit allows for easy and accurate ring resizing up to one full US size. It's perfect for achieving a on your wedding bands and other precious metal jewelry made from soft, malleable materials. Essential Tool for DIY Jewelry Enthusiasts An indispensable kit for hobbyists and professionals working with soft metals. Ideal for ring making, resizing, and repair projects. This complete set includes the expanding mandrel and rubber mallet, providing a professional solution for your jewelry workshop., Weight: 1.33710361903 pounds, Manufacturer: Aboiled