A pool cue, also known as cue stick, snooker cue or billiards cue, is an item of sporting equipment essential to the games of pool, snooker and carom cards. It is used to strike a ball, usually the cue ball. Most cues are made of wood, but occasionally the wood is covered or bonded with other materials including graphite, carbon fiber or fiberglass. While obviously not intended for the purposes, the cue is long and heavy enough to be used as in improvised weapon, as a club or staff.