An accessory that pairs with the 5/8th or 3/4 inch dent rod.n You’ll love how fast, safe, and easy it is to remove dents with a barrel shape. The Stainless Steel Flute Dent Barrel threads onto the end of the dent rod, and the result is a strong radius for removing dents on a rigid body mandrel. . On an extremely damaged flute, use the dent barrel to make way for the body mandrel to go through the body. It also works great for pushing up low spots on tone holes.