We buy these constantly for our manuals. The tabs are large enough to make sections very easy to identify, though with some binders they stick out over the edge a little because the tabs are so big, and sometimes the tabs get bent a little. But it is an incredible price for index tabs, as long as you also have labels that you can use to print and stick on them. Since our manuals go to customers, it would not look very good to just hand write on the tabs to identify the sections. So there is the extra cost of buying labels (sometimes I use a labelmaker, sometimes I use printable stickers) but this still ends up being the best value for customizable index tabs.