There are 3 products.
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The newest, most interesting innovation of the last years! Minimum tension loss (no string moving).
High durability and high dynamic. Excellent ball control.
Polyethyleneterephthalate, produced with extreme viscosity, with strong memory energy is the basic for one of the best strings the tennis world can expect.
The Signum Pro Thunderstorm is a axially twisted, decagonal string that offers excellent spin and control. This durable string has minimal tension loss while offering a comfortable, control oriented feel. This thinner gauge also offers a great playability.
