The new Gravity Force is the hottest overseas release! Using the well received R2X Hybrid coverstock and the high performance Shape Lock HD High Density Core, the pins are sure to feel the force of gravity when they hit the deck!FeaturesCoverstock R2X Hybrid Reactive Weight Block Shape Lock HDBall Finish 2000 grit Abralon PolishedDurometer 73 75X Comps generally have a cosmetic blemish that in no way effects the reaction of the ball making it nearly as good as a 1st quality bowling ball. The Pin to CG Distance will be 2 4 and the Top Weight will be within 2 4 ounces. An X Comp will have a C stamped by the serial number. The label on the box is stamped X Comp and is marked with a small red number that denotes the specific issue. Product Type Bowling Balls