it bolts in place of your caliper bracket. the axle slides through it and where yo usee the lock cylinder with a hole under it, well, is how the magic works
RoadLok gives you a special locking pin that slides into the hole under the key hole. It has a spring loaded piston at the end of it that goes right through a hole on your rotor, thus immobilizing the rear wheel.
to remove it, insert the key, give 'er a twist and pull the lock pin.
I love it so far. i've tried to rock the bike back and forth and move it myself.....you find out how heavy the bike is real quick when it wont roll