Axiom Trekk Seat Collar
Mount a rack to any bike with this lightweight adapter that adds two M5 threaded mounting eyelets to almost any frame. CONSTRUCTION Forged aluminum. MOUNTING SYSTEM Replaces stock seat post collar found on most bikes. FEATURES Clamp design minimizes stress on frames and seatposts.Ideally suited to bicycles with alloy or steel seatposts.Creates two 5mm upper rack eyelets on almost any frame.