Abstract: Apparatus for clamping a wheel of a wheeled vehicle to prevent or deter theft of the vehicle comprises (a) a first arm and a second arm, each of the arms having a middle portion, a clamping end portion and a locking end portion, the arms being rotatably connected to each other at their respective middle portions; (b) a cross bar having a free end portion and a connecting end portion, the connecting end portion being rotatably connected to the locking end portion of the first arm; (c) a first flange member extending from the locking end portion of the second arm and defining and including a first notch for receiving the free end portion of the cross bar; and (d) a second flange member detachably attachable to the free end portion of the cross bar. The clamping end portions are brought into proximity with one another when the locking end portions are brought into proximity with one another to thereby enable clamping of the wheel.