Durable aluminum alloy construction Made from quality aluminum alloy for a strong, lightweight, and wearresistant stem riser. Built for longlasting performance and stable handling. Increased riding comfort Raises the stem to increase handlebar height, promoting a more upright riding position and improved comfort on long rides. Easy installation Insert the extender into the front fork steerer tube, tighten the bolt, and connect your stem. Designed for straightforward, quick setup and removal. Wide compatibility Designed for 28.6mm threadless steerer tubes; fits the majority of bicycles, including mountain bikes and road bikes. Use scenarios Longdistance cycling: enhances comfort by elevating the handlebars for an easier, more relaxed posture. Upgrading an older bike: provides a simple way to improve riding position without replacing components. Commuting or mixed terrain: helps maintain comfort and control on varied routes by enabling a more upright stance. Performance and reliability Offers stable, secure support with durable construction to ensure a safe and comfortable ride.