Tough uses call for tough binding solutions. Manuals, which often need to lie flat or rotate 360 degrees for single-hand use, call out for the versatility of mechanical binding and the scratch-resistant toughness of plastic coil.
Willing to trade toughness for a more stylish look? Classic Wire-O binding also will not "step-up," meaning the two facing pages sit evenly when placed open on a table. This makes Wire-O ideal for charts, graphs, timetables and other large images found in manuals.