• The stem riser is suitable for most bicycles with 1-1/8 inch (28.6 mm) threadless steering gear.
• Total length: 180mm/7.09inch, bottom diameter (upper diameter): 1 1/8Inch (28.6mm), steering tube diameter: 22.2mm/0.87 inch.
• Aluminum alloy material and polished anodized finish are strong and durable.
• Raises the height of bike handlebars by increasing the stem height.
• Easy to install .just put the extender into the fork steerer tube, tighten the top bolt, and then connect up the stem.