The Meucci Carbon Fiber Shaft has a polyurethane foam and it is core plugged with maple. It creates quite a deep and warm sound when it strikes the cue ball. This also has a ferrule that is of 3/8" proprietary and it rivals the others that are available in the https://dochub.com/obrokov-5-a/8adOrbPVQgPzmYpR24Mj7D/essentials-to-buy-for-your-pool-game8-pdf