Optimal Dimensions: Each D-shaped binder ring measures approximately 0.38mm in thickness, 102mm in length, and 81mm in width, making them compact enough for easy portability while providing ample space for securing multiple items such as documents, photos, and keys. Bulk Pack Value: This set includes 8 robust 4-inch loose leaf binder rings, perfect for organizing large volumes of materials such as documents, memos, and scrapbooks. Their durable construction ensures long-term reuse and versatility in various applications. Durable Construction: Crafted with high-strength nickel plating, these binder rings resist rust and fading. The enhanced binding force ensures they maintain their shape and grip even with frequent use, while the smooth finish offers a comfortable touch. User-Friendly Design: Featuring an easy-to-operate iron spiral head, these binder rings securely fasten your items and prevent them from slipping. The design is engineered to increase holding power, ensuring your contents stay safely in place. Versatile Functionality: Beyond traditional binding, these rings serve multiple purposes. They can be used to organize photos, as curtain rings, or in crafting and keychain making, offering a cost-effective solution for various binding and organizational needs. Color: Silver Material: Metal Package Contents: 8 * clip ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.