Hammer NU Blue Hammer Bowling Ball

Looking for that classic urethane motion—without the urethane? The NU Blue Hammer delivers it all, legally and reliably.

In response to recent PBA rule changes, Hammer created something truly revolutionary: a ball that mimics the legendary Purple Pearl Urethane without actually using urethane. The result? The NU Blue Hammer. “NU” stands for Not Urethane, and it lives up to the name with a motion that’s smooth, consistent, and deadly accurate.

Crafted for competitive bowlers who rely on predictability and control, this ball shines in dry to medium oil. It’s built around the dependable Hammer LED Resin core, wrapped in the innovative Not Urethane coverstock, and finished at 1000 grit—giving it that signature early read and controlled backend motion that’s made the Purple Pearl a staple on tour.

If you’ve been searching for a legal urethane alternative without sacrificing motion, this is it. Whether you're a tournament competitor or a league bowler with finesse, the NU Blue Hammer has the touch you need.

Specs at a Glance:

• Coverstock: Hammer Not Urethane

• Core: Hammer LED Resin Bowling Ball Core

• Coverstock Type: Urethane

• Core Shape: Symmetrical Core

• Color: Blue

• Finish: 1000 Grit

• RG (15lb): 2.58

• Diff (15lb): 0.027

• Flare Potential: 2–3 Inches

• Best For: Dry – Medium Oil, Medium Oil

• Weights: 12LB, 13LB, 14LB, 15LB, 16LB

• Performance Level: Performance Bowling Balls

The NU Blue Hammer offers the best of both worlds—classic urethane motion without the limitations. Add it to your lineup and throw with confidence.