The Porper_tip burnisher is a must have if you want to keep your cue’s tip in good shape. All you do is slide it over the tip of your pool cue and twist it back and forth – this hardens the side of the tip and helps to prevent the pool cue tip from mushrooming._Essential tool for cue tip health & fits up to a 14mm tip. Burnisher is recommended for tips between 11.75mm and 14mm._1 Side Scuffs and Shapes1 Side Tip Tapper