# Pyramid Fortress Hybrid

> Bowling ball — data from CarryDown (https://www.carrydown.com/balls/pyramid-fortress-hybrid/)

- Brand: Pyramid
- Availability: current
- Released/approved: 2023-09-21
- Coverstock: [XF Gravitational Hybrid](https://www.carrydown.com/brands/pyramid-bowling/coverstocks/xf-gravitational/) (hybrid)
- Core: [SG Equinox](https://www.carrydown.com/brands/pyramid-bowling/cores/sg-equinox/)
- Intended condition: Medium-heavy oil
- Factory finish: 2000 Grit Abralon
- Flare potential: High
- USBC approved: yes (2023-12-05)

## Specs by weight

| Weight | RG | Differential | Int. Diff | Mass Bias |
|---|---|---|---|---|
| 16 lb | 2.49 | 0.04 | — | — |
| 15 lb | 2.469 | 0.047 | — | — |
| 14 lb | 2.538 | 0.04 | — | — |
| 13 lb | 2.592 | 0.031 | — | — |
| 12 lb | 2.664 | 0.021 | — | — |

## Description

Lock Down The Lane With The All New Pyramid Fortress Hybrid