A clamping device includes a clamp body and a locking assembly. The clamp body includes a first jaw defining a first opening and a second jaw defining a second opening. The locking assembly includes a first locking element, a second locking element, and a lever. The first locking element includes a first end and a shaft portion extending from the first end. The shaft portion is sized to pass through the first opening and the second opening. The locking assembly is configured to reduce a distance between the first jaw and the second jaw responsive to rotation of the second locking element. The lever is configured to attach to the second locking element and rotate about the second locking element from a first position to a second position to cause the distance between the first jaw and the second jaw to be reduced further.