Shown are 2 pcs. of these post extensions in the pack of 8 pc. These Post Extensions allow you to add extra pages to your scrapbook or photo album by extending the length of each post. Made of aluminum, each Post Extension measures 3/4" oal, with approximately 1/4" of thread and 1/2" of extension length for each piece. This pack of 8 posts will add about 2" to the thickness of the album. Most suppliers of the 2 post style filler pages will supply extra extensions with each packet of them.