Compatible with 13mm and 16mm (round) shaped shackles Mounts quickly and easily and supports the transportation of most common U-lock sizes Unique 360 degree rotation provides the ability to micro-adjust the lock angle to better fit and align with a bike's frame specific geometry Single point attachment and adjustment design allows for adjustment without removing the bracket completely Heavy-duty strap system contours to the shape of the bicycle frame providing constant contact with the tube while in transit Fits bicycle frame tubing 25mm to 80mm whether round, oval, triangular or square shapes 
