UltraCycle Adjustable 1'' Quill Stem gives you quick and easy handlebar height adjustment. The Ultracycle Adjustable Quill Stem allows you to adjust the rise of your stem between 0 and 60 degrees. Melt-forged alloy 25.4 mm bar clamp diameter Fits 1'' or 1-1/8'' steerers (22.2 and 25.4 mm quill diameter) Adjustable rise 0 degree to 60 degree Black or Silver anodized