It took me all of thirty minutes to attach the 72 tabs and they were easy to attach. They also seem very durable in the way they attach to the page and double up in the tab for durability. Other tabs I have had would break off while these tabs have lasted well. They are the right sized tabs for my large bible I have. What I truely like about the tabs is that they are color coded. The first 5 books of the Old Testament are red, the first four books of the New Testament are blue, etc with 4 other colors to separate the books. You also have special tabs for the bible. This makes it alot easier to locate the books you are looking for. They are also easy to view and read.