# Pyramid Fortress Solid

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

- Brand: Pyramid
- Availability: current
- Released/approved: 2023-11-23
- Coverstock: [GPS Navigational ATX-XX](https://www.carrydown.com/brands/pyramid-bowling/coverstocks/gps-navigational-atx-xx/) (solid)
- Core: [SG 10.5 Portal](https://www.carrydown.com/brands/pyramid-bowling/cores/sg-10-5-portal/)
- Intended condition: Medium-heavy oil
- Factory finish: 2000 Grit Abralon
- List price (MSRP): no manufacturer price found
- USBC approved: yes (2023-12-05)

## Specs by weight

| Weight | RG | Differential | Int. Diff | Mass Bias |
|---|---|---|---|---|
| 15 lb | 2.533 | 0.05 | 0.023 | — |

## Description

Lock Down The Lane With The All New Pyramid Fortress Solid