Kalloy 1-1/8" Adjustable Quill 110mm 90-150 Degree Black Forged Clamp Diameter: 25.4mmClamp Diameter: 25.4mmSteer Tube Clamp Diameter: 1-1/8"Steerer Tube: 1-1/8" ThreadedStem Color: BlackStem Length: 110mmStem Rise: 90-150 deg