Oval Concepts R300 Stem Road Mountain Bike Aluminum Black 120mm Style: Road, cross, triathlon, TT and light MTB riding/racing Length: 120mm, Bar Clamp: 31.8mm inward bolt design for reduced bar stress, Steer: 1-1/8" Threadless Design: Oval design provides strength, stiffness and weight savings Material: 6061 alloy, Color: Matte black Rise: +/-6 degrees