The Sonic "Boom"™ is Roto Grip's latest addition into the entry level mid-price market. We have added the all new Sonic "Boom-IT"™ core to give you added backend and hitting power. This high RG, low-medium Differential weight block produces excellent length and a stronger backend move than the original Sonic X on medium-lighter oil patterns. The combination of Sure Grip II™ pearlized coverstock and the "Boom-IT" core will shatter the "Sound Barrier".
