Fangrui Product Details 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, For Organizing Large Volumes Of Materials Such As Documents, Memos, And . Their Construction Ensures Long-term Reuse And Versatility In Applications. 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: B