15 pieces nickel plated steel loose leaf binder rings</br> Features:</br> 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</br> Specifications:</br> Material: metal </br> Sizes: 2 inch / 50 mm diameter</br> Package: 15 pieces</br> Notice:</br> Be away from water and acid environment</br> Please check the dimension of your items before you purchase</br> You may use more strength to open or close it</br> Small parts, not for Children under 3 years old</br> There may be some error in the material object