# Roto Grip RUBICON EX

> Bowling ball — data from CarryDown (https://www.carrydown.com/balls/roto-grip-rubicon-ex/)

- Brand: Roto Grip
- Availability: discontinued
- Released/approved: 2021-05-04
- Coverstock: [eTrax Pearl](https://www.carrydown.com/brands/roto-grip/coverstocks/etrax/) (pearl)
- Core: [Rondure](https://www.carrydown.com/brands/roto-grip/cores/rondure/)
- Intended condition: Medium-heavy oil
- Factory finish: 1500 Polished
- List price (MSRP): no manufacturer price found
- USBC approved: yes (2021-05-04)
- PBA certified: yes

## Specs by weight

| Weight | RG | Differential | Int. Diff | Mass Bias |
|---|---|---|---|---|
| 16 lb | 2.48 | 0.05 | 0.012 | — |
| 15 lb | 2.49 | 0.052 | 0.011 | — |
| 14 lb | 2.53 | 0.052 | 0.009 | — |

## Description

A drastic departure from our traditional symmetrical weight block designs in the HP3 line, the asymmetrical Rondure Core was developed to increase overall ball motionthroughout the lane without the aid of an added balancehole. Featuring our most recent formulation of eTrax pearl coverstock technology, this cover is easily sanded orflawlessly polished in order to meet your needs on a varietyof conditions without losing traction and responsiveness to friction.