1/2" Antique Brass Aluminum Screw Post Extensions are excellent in making photo albums and scrapbooks longer so you can fit more pictures. They have a antique brass color anodized coating on the extension to give them an old fashioned effect of the antique brass exterior. This extension is 1/2" long and has a 3/16" diameter. They fit perfectly into all of our aluminum screw posts. So if you want to add just a 1/2" to your project try our extensions.