Surco Eliminator- Anti-Sway Bracket prevents any rattling between the rack and the hitch bracket clamps down around bike rack and hitch for a more stable ride. The Eliminator works with any hitch mount bike rack designed for a 2 inch receiver. Made of steel and protected by a rust-resistant powder coated black finish. Eliminator Anti-Sway Bracket is backed by a 90-day warranty. Dimensions: 2-1/2 inch Outer Dimension, 2 inch Inner Dimension 3-1/2 inch Outer Dimension, 3 inch Inner Dimension.