Description 2-ring binder mechanism spine is made of metal material, wear resistant and scratch resistant, can serve you a for lasting time. Designed with strong metal structure, won't crack, break or fade color., and great for most loose leaf diy, can be perfectly integrated with your items. Features - Color: As Shown-Material:Metal- Size: 12.60X3.00X2.00cm/4.95X1.18X0.79in -binder ring inner diameter: 20mm-binder ring hole distance: 80mm - Simple design, 2 ring binder mechanism is suitable for various loose-leaf notebook or planner.- Detachable design, easy to replace and organize, the binder mechanism is screw type, easy to replace.- 2-hole design, meeting different binding needs, metal binding is firm and strong for lasting use.- Diy design, use this 2 ring binder mechanism to make your loose-leaf notebook more personalized.- Metal binder ring mechanism is not easy to break, practical and can be applied for a longer time.Packing list: 1 x binder mechanism