ROTOGRIP IDOL COSMOS BOWLING BALL CHOOSE FROM 14 or 15 LBS FROM THE DROP DOWN MENU WE HAVE MANY TO CHOOSE FROM EMAIL US YOUR SPECS AND WE WILL GET AS CLOSE AS POSSIBLE. BEHIND THE DESIGN: Due to the success and overwhelming popularity of the IDOL™ Helios , we felt it was an absolute must to create a pearlized version using the exact same XtremeTrax™ coverstock technology. On the i nside you will find the same low RG symmetric Ikon™ Core , while on the outside you will find our newest never before used pearlized coverstock technology known as XtremeTrax™ Pearl Reactive . And j ust like the original solid version , this version contains chemically charged nano-particles thanks to our out of this world coverstock chemistry. What does th is mean ?... It means the XtremeTrax P earl Reactive c overstock will provide more traction in oil than our eTrax™ PLUS P earl or eTrax™ P earl reactive covers, while still providing plenty of responsiveness to friction down lane . M aking the IDOL Cosmos the perfect compl e ment to the IDOL Helios and the rest of the Roto Grip line of bowling balls . SPECS: 12 13 14 15 16 RG 2.65 2.59 2.54 2.49 2.49 DIFF 0.035 0.045 0.049 0.052 0.049 INT DIFF 0.000 0.000 0.000 0.000 0.000 Coverstock: Xtreme Trax™ Pearl Reactive Core: IKON Core Color: Stardust Teal Finish: 4000-grit Abralon Weights: 12-16 lbs Flare Potential: High Condition: Medium Oil - Medium /Heavy Oil SHIPPING IS FREE TO THE LOWER 48 IN THE UNITED STATES