Features: brand new and high quality ECONOMICAL PACK. A pack of 50 metal loose-leaf binding rings. for Ideal for flash cards, index cards, colorful card stocks, words cards, cooking recipes sheets, menus, etc. HIGH QUALITY. Premium iron material, smooth surface, anti-rust, strong and durable, Multi-layer nickel-plated steel rings, color unfading. Built to last. MULTIPLE SIZES. Small ring: Inner diameter 0.59'' (15mm). Medium ring: Inner diameter 1.5'' (38mm). Large ring: Inner diameter 1.8'' (45mm). EASY TO USE. Convenient to use just pull to open and squeeze to close; the misalignment occurred after opening. Maximum paper capacity up to 350 sheets of A4 papers. MULTI-PURPOSE. Very suitable for loose-leaf photo album, memo filing, for key rings, DIY scrapbooking, binding recipes, photos, lectures speech manuscript, sample books, sample holders, business contracts or office files. Specifications: Material: Metal Color: Silver Inner Diameter: Approx. 15mm/0.59in; 38mm/1.5in; 45mm/1.8in Outer Diameter: Approx. 20mm/0.79in; 45mm/1.8in; 50mm/2in Weight: Approx. 75-410g Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 50 Pcs Loose-leaf Binding Rings