A must have for league players! Available for both 8-ball and 9-ball, these pocket markers are made from actual miniature pool balls. League Rules! And many league rules require you to place a marker on the pocket you are shooting for. this 1/2 9 ball with a flat felt covered back is the perfect marker. Large enough to see, small enough to fit in your pocket. They are large enough to be noticable, yet are small enough to fit comfortably in your cue case.