The Storck ST115 4 Bolt Stem's no nonsense design offers you reliable performance that you can count on season after season. The ST115 is made with the lightweight and durable 2014 T6 heat treated aluminum. Storck uses a 4 Bolt design to evenly distribute clamping pressure over a larger area, which also ensures a secure hold on your bars. Storck completes the stem with a shot peened finish and a sleek blue and white graphic. The ST115 features a 31. 8mm clamp diameter and a 5 degree rise, making it an ideal choice for your road or mountain set up.