The Columbia 300 Resurgence bowling ball has been resurrected! Columbia 300 brought back this powerful symmetric core ball because of it's former popularity around the world. The Resurgence core has a lower RG and medium flare potential. This combination along with the Reflex Hybrid coverstock generates a strong read at the midlane as well as consistency and continuation at the backend on medium to heavy oil. This ball utilizes Columbia's HyperSHOCK Technology to assist the ball in powering through the pins.