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These are 100 sets of aluminum screw posts, also called Chicago screws, each with a threaded post and matching screw. The post is 1/4 inch long and 3/16 inch in diameter, so it fits a 1/4 inch punched or drilled hole and binds stacks up to 1/4 inch thick. They are reusable and can be extended with screw post extensions for thicker stacks. Compared with plastic binding combs or rivets, they hold photo albums, swatch books, menus and engineering drawings flat and let you add or remove pages. Buyers rate them highly, and the main trade-off is that the short post limits each set to thin stacks unless you add extensions.
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Buyers rate these screw posts very highly, and the feedback centers on secure, tidy binding and easy reuse. The recurring caveat is the short 1/4 inch post, which limits how much each set can hold.
These 1/4" silver aluminum screw posts bind loose sheets securely. They are also called Chicago screws or screwposts. Each set has a threaded post and a matching screw that fasten together through pre-punched round holes.
They bind stacks up to 1/4" thick and leave a clean finish. The sheets can be taken apart for updates or revisions, and the posts are reusable. Screw post extensions can be added for thicker stacks. Uses include photo albums, swatch books, menus, and architectural and engineering drawings.
The posts do not hold pages straight on their own, so a thicker cover helps keep it from bending easily. They can also bind thick materials such as leather, which can't go through a punch machine. They fit 2-hole and 3-hole punch patterns. Measure the stack's thickness before use to confirm it fits.



