❀The extension adapters feature customizable angles to optimize rearview glass positioning, ensuring accurate observation and eliminating blind spots during rides. ❀Raises glass, significantly expanding rear visibility for safe navigation in complex road conditions. ❀Fits standard 10mm screw interfaces on most motorcycles and e bikes, offering easy installation without compatibility concerns across various models. ❀Made with high strength aluminum alloy that's 3x more wear resistant than steel, resistant to rust for long term in various weather conditions. ❀Unique structural design enables 10 second installation without additional tools, ideal for riders needing quick glass adjustments or replacements.