●SUPERIOR QUALITY: Made of high quality aluminum alloy, anti-rust, wear-resistant and durable ●Compatible with: 22mm/28mm diameter handlebars. (Example: Fits Honda, Kawasaki, Suzuki, Yamaha, BMW models, etc. ) ●Functionality: Effective in improving positions, reducing fatigue while riding, making touring much easier ●Diameter 22mm:38mm move up backward shift 18mm Suitable for OEM hole center size: 33mm - 35mm ●Diameter 28mm:40mm move up backward shift 18mm Suitable for OEM hole center size: 40mm - 41mm