They rotate in the sense that they are not fixed to the internal nut, but if crushed enough they will pinch down onto said nut enabling the lock to be undone. I still think they're bloody useful, anything can be cut, I carry a hefty abus D lock and ocaissional cable to loop through the front wheel, reality is that if they have the time they can cut the cable, and if they have the tools they can crush the pit lock or cut the abus. Its like having a yale lock on your front door, buy a mortice as well just to make them go onto another easier target.
They rotate in the sense that they are not fixed to the internal nut, but if crushed enough they will pinch down onto said nut enabling the lock to be undone. I still think they're bloody useful, anything can be cut, I carry a hefty abus D lock and ocaissional cable to loop through the front wheel, reality is that if they have the time they can cut the cable, and if they have the tools they can crush the pit lock or cut the abus. Its like having a yale lock on your front door, buy a mortice as well just to make them go onto another easier target.