Each of our Auto Twirler rotisseries come with 4 mounting arms. Occasionally customers want additional arms that they can modify for mounting to their body. Each mounting arm has two holes in the end so you can bolt directly into body mounts on full frame car bodies. They also all have 2” square tubing protruding out from the collar so that all of our brackets will mount on them. These arms fit the Pro, Elite and Classic Rotisseries with 3″ swing arms.