ProTaper Vice Trail Stem - 40mm, 31.8mm Clamp, +/-0, 1 1/8", Aluminum, BlackOn the surface, the Vice stem may look simple, but under that beautiful veneer lies hours of 3D modelling, countless revisions, and tons of real world ride testing. All of this is done to provide a light, stiff stem that can handle tremendous forces from every conceivable angle. 3D Forged and Machined 6061 Alloy construction Torx, A2 Stainless hardware 0 deg rise Product Specifics Stem Angle (deg): 0 Length: 40 Material: Aluminum S. H. I. S. Stem