These funky sticks are truly unique. The mini billiards ball core is a 1.5” diameter phenolic. It is tremendously heavy and is definitely not suited to general playing. However, for those moments when you need soft, single notes on glock that are super warm and full- this stick is incredible. Keep them low and use a very relaxed, light touch and these sticks will work wonders. Disclaimer- each pair will be a different color/stripe since we use actual mini billiards ball sets to make these.