It’s easy to make intriguing books with post bindings. Use a single post for a book with swing-out pages. Use two posts to make stylish books or practical, expandable albums—simply unscrew the two parts of the post to add additional pages. Drill through the pages of your book using a 1/4" drill bit to accommodate the 13/64" diameter posts. The diameter of the screwheads is 3/8". Posts and screws have a bright aluminum finish. We offer two sizes. 1/2", pack of 25 posts and screws –OR- 1", pack of 25 posts and screws.