Ritchey WCS 4-Axis Matrix stem, (31.8) 6/84dx100 3K Clamp Diameter: 31.8mmClamp Diameter: 31.8mmLength: 100-129 mmSteerer Tube: 1-1/8" ThreadlessStem Color: 3KStem Length: 100mmStem Rise: 6/84 degWeight: 135g