These 1-1/2" aluminum screw posts are anodized with a black coating that will make any project look nice. The post length is 1-1/2" with a diameter of 3/16". The thread size of the screw and post is #8/32. You will need to have a 1/4" hole punched or drilled into the project to make the post fit properly. These black screw posts work great for scrapbooking, book binding, swatches and so many more projects. For orders over 26 packs give us a call for a price quote.