1/4" Aluminum Screw Post Extensions are anodized in a Antique Brass color to make your project a little old fashioned. They are used for extending the length of our aluminum screw posts. The post length is 1/4". Post length is the length that the extension will add to the screw post it is assembled with. The diameter of the post is 3/16" with a thread size of #8/32. This will work with any post as long as the diameter and thread size match. They come in packs of 100. If ordering over 30 packs give us a call for a better price.