I recommend this product. They are better than hollow plastic balls to dent in or whiffle plastic balls that do not take a direction or spin. These act more like real golf balls and are more durable.

These balls are being used as scudder plugs in a sundolphin kayak since the plugs sold at various stored did not fit! These work perfectly!!!!

I've wacked these things several times, so far, seem to hold up good.

great for practice

Got them to plug the scupper holes in my kayaks. 12 balls for the price of 1 scupper plug...you do the math.