Optimize your efficiency and comfort by fine-tuning your stem angle with this adjustable and economical stem.3D-forged and CNC-machined, 6061 aluminum, road/MTB-compatible stem4-bolt oversized 31.8mm handlebar interface with relieved faceplateEquipped with top cap and 4-degree, 2-degree, and 0-degree shimsAvailable in 12-degree, 17-degree, and 24-degree angles12-degree: 10 position angle range: +/- 8-degree to 16-degree, in 2-degree increments17-degree: 10 position angle range, +/- 13-degree to 21-degree, in 2-degree increments24-degree: 10 position angle range: +/- 20-degree to 28-degree, in 2-degree incrementsCompatible with composite handlebarsApprox. weight: 188g (110mm).