- This bowling ball ships PRE-DRILLED. There are 5 sizes and the sizes that we drill are based on the weight of the ball. X-Small: 6lbs- Ages 8 and under, Small:
- 8lbs and 9lbs- Ages 8-11 and womens ring size from 8-11, Medium: 10lbs, 11lbs, and 12lbs, Ages 11-15 and Adult Ring size 10 or lower, Large:
- 13lbs and 14lbs, Mens ring size 10-12 or people with larger hands, X-Large: 15lbs and 16lbs, Mens ring size over 13 or people with extremely large hands.
- If you would like a different size drilled for the weight you selected, you must contact us via email as soon as your order is placed with your order number.
- Pre-Drilled bowling balls cannot be returned or exchanged. After countless months of research and development, and after multiple tests and discussions with players of all skill levels, the Roto
This bowling ball ships PRE-DRILLED. There are 5 sizes and the sizes that we drill are based on the weight of the ball. X-Small: 6lbs- Ages 8 and under, Small: 8lbs and 9lbs- Ages 8-11 and womens ring size from 8-11, Medium: 10lbs, 11lbs, and 12lbs, Ages 11-15 and Adult Ring size 10 or lower, Large: 13lbs and 14lbs, Mens ring size 10-12 or people with larger hands, X-Large: 15lbs and 16lbs, Mens ring size over 13 or people with extremely large hands. If you would like a different size drilled for the weight you selected, you must contact us via email as soon as your order is placed with your order number. Pre-Drilled bowling balls cannot be returned or exchanged. After countless months of research and development, and after multiple tests and discussions with players of all skill levels, the Roto Grip ROCKSTAR provides a new motion and reaction for both the competitive player ranks and the advanced player ranks to shred and rock on those Medium to Heavy Oil Conditions. Offering new state-of-the-art technology in both the coverstock material and weight block shape design, the ROCKSTAR was developed to provide greater versatility on more oil conditions and lane surfaces than previous HP3 level balls since there have been plenty of advancements in the world of lane maintenance and lane surfaces in recent years. The new NanoStar™ coverstock material is our latest nanotechnology remix. This union of nano particles mixed with new chemistry provides similar traction in the midlane to that of our legendary MicroTrax™ material. However, the difference you will easily see is that the NanoStar™ material does not dig into the lane as early as MicroTrax™, it generates more responsiveness to friction down lane in terms of nanotechnology materials. In other words, breaking it down a little more for you... NanoStar is not as early as MicroTrax, and it’s not as clean and responsive as our eTrax™, eTrax PLUS™, or eTrax ULTRA™ materials. Therefore, it fills the gap between MicroTrax™ and eTrax™. Showcased at the center of it all you will find our newly developed weight block shape that is destined for greatness, known as the ROCKER Core. Its authentic shape encapsulated in A.I. Core technology provides a more centralized rotation plane to better provide more continuation through the pin deck. As always, our team of R&D rockstars aim to develop weight block shapes that perform for bowlers of all skill levels not just the ones you see on TV. Meaning, the ROCKER Core is no different, it was designed for the masses. Let’s just say, the combination of amplified power and amplified motion results in sheer amplified awesomeness. So, if you are indeed ready to rock, then look no further, ROCKSTAR is here and ready to make you famous! RG: 16lbs(2.48) 15lbs(2.48) 14lbs(2.50) 13lbs(2.58) 12lbs(2.64) Diff: 16lbs(.054) 15lbs(.050) 14lbs(0.46) 13lbs(.047) 12lbs(.037)
