What is a self-locking rack for billiard cues?

Answer 1

Today, there are generally 2 types of cue racks for storing cues in the vertical position, necessary for minimizing the potential for warp. The floor type and some wall types use a hole that the cue must be pushed through at the top prior to the butt being rested on the bottom section. The second type is the self-locking type, using a spring or flexible plastic to grip the narrow end of the cue at the top, which can be called a clamp. The self-locking type top section is essentially a "C" shape that allows the cue to be inserted and removed by spreading the C with very little pressure.