Specifications:25mm Setback with 2-Bolt Micro adjustment Design: The hidden 2-bolt head design enables micro-adjustments and eases installationThe uniquely designed upper and lower clamps evenly distribute clamping forces and minimize stress on carbon rail saddlesWeight: 313gDiameter: 27.2mmLength: 350mmMinimum Insertion Length: 90mmOffset: 25mmHead: 2-bolt, non-reversibleFinish: Matte BlackMaterial: 6061-T6 aluminum topped with forged 6061-T6 upper and lower clamps