Zipp's SL Speed stem represents the essence of carbon componentry. It's stiff, secure and light weight with a sleek design that compliments any bike.Features-Unidirectional carbon-Includes stiff aluminum faceplate and titanium hardware Torx T25 heads for precise torque readings and ease of adjustment-Black matte carbon finish with white Zipp logosItem Specifications-Stem Angle (deg):+6-Stem Angle (deg):-6-S.H.I.S. Stem Clamp Diameter:28.6-Defined Color:Black-Stack Height:41-Weight:123-Color:Matte Black-Material:Carbon-Length:110-Bar Clamp Diameter (mm):31.8