By using pre-punched binding paper, you eliminate the need for expensive and, sometimes, difficult to use, punching equipment. Instead of hassling with the accuracy involved with punching your own paper, you can have a ready-to-bind stack of punched sheets, greatly speeding up the book making process. These spiral binding coil pre punched papers are 8 ½" x 11" and have either 43 or 44 holes along the 11" binding edge. Both options are 4:1 pitch, meaning they have four holes for every inch of paper, which is the standard pitch for plastic coil bindings. You can also buy spiral binding coil pre-punched paper online with either round or oval holes, the oval holes making for easier coil insertion, ideal especially for thicker books.