Key benefits - Adjustable tension setting for precise chain tension and improved pedaling efficiency - Derailleur hanger mount and a guide wheel provide stable, reliable chain management - Helps prevent chain drop by securing the chain; mounts on the rear derailleur guide wheel frame - Aluminum alloy construction delivers durability with light weight What makes it stand out - Lightweight aluminum alloy design combines durability with minimal added weight - Simple, sturdy mounting on the derailleur hanger and guide wheel frame for reliable performance - Focused on maintaining chain tension and preventing drops during shifting and riding Specifications and performance - Function: chain tensioner with guide wheel for stable chain management - Compatibility: designed to mount via derailleur hanger and rear derailleur guide wheel frame on compatible bikes - Material: aluminum alloy - Performance: improves chain retention and overall cycling efficiency through controlled tension Use scenarios - Folding bikes: prevents chain drop when folding or unfolding, keeping the drivetrain secure during transitions - Bikes with rear derailleur guide wheel frames: enhances chain retention on uneven roads and during shifting - General riding and commuting: maintains consistent chain tension to reduce chain slip and improve pedal efficiency on varied terrain