The Syntace X-FIX key (int. pat. pend) is the perfect addition to the Syntace X-12 through-axle system. It doesn’t matter where and when you need it, the Syntace X-FIX key is always there. Whether you are assembling or removing an X-12 rear wheel quicker than with conventional “quick” releases, fine adjusting the seat or stem angle, moving controls or adjusting the brake calliper. And what a bonus: No additional weight when compared to standard QR’s which are attached to the axle.