Brunswick Crown Factory Bowling Ball Polish- QuartThe Brunswick Crown Factory Polish is great for getting your bowling ball back to its maximum potential. It will create more length and a strong flip. If you want to get your ball back to Brunswick Factory Finish then this is your go to polish. Do not worry about needing a ball spinner either, this polish will work with a cloth just as well. Helps create great length and strong backend motionRestores tackiness in reactive resin bowling ballsWill work