Intent was to set up a binder for ultra-fine grit sandpaper in my shop to support the need for mirror-finish and razor sharp chisel and plane blades. Turns out the sheet protectors (though heavy enough weight) are 11 x 8.5 inches plus binding edge. Sadly the industry-standard size for the ultra-fine grits is 11x9.0 inches so none of the protectors were wide enough to do the job. Solution: went back to Staples and bought some side-insert 3-hole mount folders with Velcro fasteners and flaps to hold the paper inside. With a little persuasion I was able to unglue the fuzzy side of the Velcro and re-attach it with the same glue patch so the folders would hold all the sheets I needed. Now I have a three-ring binder with all the fine grit sandpaper I need to finish and maintain my chisels plane blades and knives & razors. All filed &stored in order and safely. Should save a lot of money long-term.
The sheet protectors are ok good for limited use. They are difficult to separate for insertion and spacing of the holes for the rings is not spot on. They must be "wiggled" into place.