Baby got back. No, we're not talking ba-donk-a-donk; we're talking stud backers. Premium aluminum stud backers. We made these 1-3/8" round to stop tearing. These backers are 0.140" thick, and 1/4" tall, the perfect weight and profile to secure any 5/16" diameter stud. The premium aluminum construction is impervious to wear, tear and damage.