The pro Justa-Bridge is adjustable for a multitude of shots. This plastic bridge with protective felt grooves attaches to almost any cue quickly with it's locking rubber grip, allowing players to shoot over balls, take shots when the ball is close to the rail - it can even simulate a closed bridge. To adjust the bridge's height, rotate the bridge body; to adjust it's position, rotate your cue butt. This bridge is so easy and works so well, it is used in most professional tournaments.