The Bontrager Comp Alloy Seatpost is a versatile aluminium seatpost with two-bolt micro-adjust. The Bontrager Comp Alloy Seatpost can be used on your mountain or road bike for a comfortable riding position in a variety of positions.Bontrager Comp Alloy Seatpost FeaturesStraight-gauge 6061-T6 alloy shaft construction2-bolt rocker-head with micro-adjustmentSuitable for road or mountain useBontrager Comp Alloy Seatpost SpecificationsDiameter: 27.2mm/31.6mmLength: 330mm/400mmOffset: 8mmRail Compatibility: UniversalMaterial: 6061 Aluminium AlloyWeight: 300g - 385g More info