Great Material: Loose leaf ring is made of iron material, strong and durable, Multi-layer nickel-plated steel rings prevent rusting, color unfading Size: 1.5 inch / 38 mm diameter (outer ring), 20 pieces loose leaf rings Easy to Operate: Convenient to use just pull to open and ...Great Material: Loose leaf ring is made of iron material, strong and durable, Multi-layer nickel-plated steel rings prevent rusting, color unfading Size: 1.5 inch / 38 mm diameter (outer ring), 20 pieces loose leaf rings Easy to Operate: Convenient to use just pull to open and squeeze to close; the misalignment occurred after opening, because the binder ring itself did not use spring or other elastic devices, in order to make the bite tightness after closing more tightly, so this design was used Wide Application: Binder Rings are suitable for loose-leaf, memo filing, key rings, scrapbook, binding recipe, photos, book, sample book, scrapbook, contract or file 20 pieces nickel plated steel loose leaf binder rings Features: Unique Design: The misalignment occurred after opening, because the binder ring itself did not use spring or other elastic devices, in order to make the bite tightness after closing more tightly, so this design was used Specifications: Material: metal Sizes: 1.5 inch / 38 mm diameter Package: 80 pieces Notice: Be away from water and acid environment Please check the dimension of your items before you purchase You may use more strength to open or close it Small parts, not for Children under 3 years old