Features: Crafted from premium 304 stainless steel, these adjustable rings bases are rust resistant and sturdy, ensuring your embellishment stay securely in place for long lasting wear. The flat pad design accommodates a variety of gemstones shapes, making it easy to create unique jewelry pieces with a smooth surfaces that enhances the overall aesthetic. Perfect for jewelry designers, DIY enthusiasts, and artisans, these rings bases are suitable for both personal use and small studio projects. Ideal for crafting individualized rings and bracelets, these bases are perfect for weddings, parties, and everyday wear, allowing you to express your creativity on any occasion. With an adjustable fit for adult finger sizes, these versatile rings bases offer endless possibilities for crafting, making them a must have addition to any jewelry making toolkit. Specifications: Component:Alloy Size:6mm/8mm/10mm/12mm/14mm Ring Inner Diameter:Approx.17.5mm/0.68inches Package Includes: 10Pcs Rings Blank Bases note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!