16-Piece Set: 4 Each of 1,2,3,4-inch Sizes. Nickel-Plated Metal. for Key Cards, Index Cards, documents. Universal for School, Home, Office. Silver Metal.

["DURABLE CONSTRUCTION & SECURE ORGANIZATION: Our premium binder rings are crafted from high-grade, multi-layer nickel-plated steel, providing significant strength and enhanced corrosion resistance. This design helps ensure your documents, index cards, and craft projects remain securely bound, minimizing concerns about rust or color degradation over time. Ideal for frequent use and demanding projects, these rings are built for consistent, long-lasting performance.","HIGH CAPACITY FOR DIVERSE NEEDS: Featuring a generous 3-inch (80mm) outer diameter and a 2.88-inch (73.1mm) inner diameter, each metal ring can hold a substantial volume. A single ring securely binds up to 175 sheets of 20 lb paper, and a set of 12 can organize up to 700 sheets. This ample capacity is well-suited for compiling extensive reports, detailed scrapbooks, or large collections of index cards, expanding your organizational possibilities.","EASY TO USE & RELIABLE CLOSURE: Our binder ring design prioritizes ease of use and dependable security. The user-friendly pull-to-open and squeeze-to-close mechanism allows for quick and simple page management. The closure is calibrated to provide a firm, secure hold, reducing the chance of accidental opening or disorganization. A slight initial alignment adjustment may be needed when opening (a design feature for optimal tightness when closed), but contents are held firmly once sealed.","VERSATILE FOR CREATIVITY & EFFICIENCY: Beyond standard document binding, these versatile rings support a wide array of organizational and creative projects. Use them for compiling loose-leaf notes, constructing scrapbooks, creating custom recipe books, organizing key rings, or as functional rings for sample books and contracts. Their robust construction and smooth finish make them suitable for both professional office and DIY craft environments.","USER-FRIENDLY & SMOOTH FINISH: Handling comfort is a priority. Each binder ring is finished with smooth, rounded edges to minimize sharp points or rough surfaces. This thoughtful design ensures a comfortable experience for all users, from warehouse inventory management to intricate craft activities. Experience the assurance of a product built for sturdiness and user comfort."]