Baby got back. No, we're not talking a killer ba-donk-a-donk; we're talking stud backers. Premium, heat-treated aluminum stud backers. We made these double backers over 2-1/2" wide, for the riders who want to run a tight double row of studs up the center of their track. These 0.180" thick backers are the perfect weight and profile for Fat Head Studs or the Platinum Series. The premium aluminum alloy construction resists wear, tear and corrosion, and of course, we've got your back with a two-year replacement warranty.