Moterm 2 Pack 6 Rings Loose Leaf Binder for Binder Planners To ensure that the ring mechanism will fit your planner, whether you are making a notebook/binder hybrid or replacing the rings on your current binder, please read the measurements(in picture) of the entire length plus ring spacing. Length is measured from end to end of each trigger. Please note: this ring mechanisms is a screw type. Because some mechanisms are fixed to a back plate instead of using screws.