Vibra Worm - Gel Filled Long Tennis Racquet Vibration Dampener - Choice of Color

Better than the newer style Gamma worm, but not as good as the old Gamma worm. Old Gamma worm was the best, but now they have cut costs and made a cheaper, inferior product selling for the same price.

After have installed at racquet, it could not hold 2 games having one of the hooks popped out of the product