# Hammer NU Blue Hammer

> Bowling ball — data from CarryDown (https://www.carrydown.com/balls/hammer-nu-blue-hammer/)

- Brand: Hammer
- Availability: current
- Released/approved: 2023-11-16
- Coverstock: Not Urethane (urethane)
- Core: LED
- Intended condition: Light-medium oil
- Factory finish: 500, 1000 Siaair Micro Pad
- USBC approved: yes (2023-10-16)
- PBA certified: yes

## Specs by weight

| Weight | RG | Differential | Int. Diff | Mass Bias |
|---|---|---|---|---|
| 16 lb | 2.541 | 0.035 | — | — |
| 15 lb | 2.586 | 0.027 | — | — |
| 14 lb | 2.605 | 0.026 | — | — |
| 13 lb | 2.598 | 0.025 | — | — |
| 12 lb | 2.592 | 0.031 | — | — |

## Description

A Revolutionary Ball!
Hammer is excited to introduce a revolutionary ball – actually a game-changer for bowlers seeking alternatives to traditional urethane ball reaction. With recent changes to PBA rules regarding traditional urethane, Hammer took on the challenge of producing a ball that would mimic the performance attributes of the famous Purple Pearl Urethane Hammer without using urethane… and we nailed it. The NU Blue Hammer is “not urethane” but delivers a urethane ball motion. It is versatile, smooth, consistent, and predictable, making it ideal for challenging lane conditions. Bowlers will experience all the advantages of a reactive ball that can be used in any competition while benefiting from the classic Purple Pearl Urethane ball motion that has dominated the lanes for years.