Ritchey Comp Stems are constructed of 3D-Net forged 6061-T6 aluminum.40mm stack height3D-Net Forged 6061-T6 alloy constructionAngled steerer clamp helps prevent damage to lightweight aluminum and carbon steerer tubesStainless steel clamp boltsItem SpecificationsColorBlackWeight180gIntended UseMountainBar Clamp Diameter31.8mmStem Angle120degStem Length60mmSteerer Tube1-1/8" ThreadlessDefined ColorBlackS.H.I.S. Clamp Diameter28.6