Upgrade from standard eyelet mounting to stable secure and reliable axle mounting. In addition to many eyelets being made for the minimal weight of fenders eyelet mounted racks rely on the strength of M5 bolts loaded in shear Old Man Mountain Fit Kits provide a low captured mounting point at the axle. Pucks provide a secure upper attachment point for the rack and attach with high strength UV stable zip ties. Safe for carbon steel titanium and aluminum bikes and forks.Fit Kits include thru-axle or QR with mounting points All necessary hardware protective tape and pucksMounts a rack to bikes without eyeletsIncrease Divide/Divide Fat weight limit to 70 poundsFits Divide Divide Fat and Elkhorn racksFits full suspension bikes gravel bikes road bikes etc