The Premium Belgian Aramith Blue Logo Cue Ball is made from the most advanced Aramith Phenolic Resin and is used in commercial and residential locations around the world. It meets regulation standards measuring 2 1/4" and weighing in at 6 oz. This cue ball is distinguished by the Blue Aramith Logo which is made into the ball and will not wear off. Blue logo cue balls are NOT magnetic. If you are looking for a magnetic cue ball, we recommend the Aramith green logo cue ball.