Hammer Purple Pearl Urethane 78D vs. Hammer Hammerhead Pearl

Compare the specs of the Hammer Purple Pearl Urethane 78D and Hammer Hammerhead Pearl side by side in the ball comparison table below. To view the full bowling ball review for one of these balls, click the ball name link in the table below.

Click here to add or remove balls from this comparison.


Brand	Hammer	Hammer
Ball Name	Purple Pearl Urethane 78D	Hammerhead Pearl
Cover Name	Urethane Pearl 78D	HK22 - Aggression Pearl
Cover Type	Urethane Pearl	Reactive Pearl
Box Finish	500 SiaAir	500 / 1000 / 1500 SiaAir / Factory Compound
Color	Purple Pearl	Onyx / Silver / Yellow
Core Name	Super LED	Spheroid
Core Type	Symmetrical	Symmetrical
RG	2.632	2.481
Total Diff.	0.034	0.048
Int. Diff.	0.000	0.000
Torque Length Back End Total Hook Ball Tester Ratings	See Performance Ratings... Already a premium member? Click here to log in.

The graph below shows a visual comparison of the selected balls. Click on each colored circle in the graph to see that ball’s name and ratings. Click the circle again or click the ball's name to view that ball’s full review.

Filter by Date

Filter by Torque

Filter by Back End

Torque Legend:

Back End Legend:

For more information about our bowling ball testing and review process, please click here.

Bowling Ball Comparison Graph