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A newly developed, softer high-performance and versatile polyester string designed to offer more control while still generating extreme power and intense spin and bite.
A newly developed, high-performance and versatile co-polyester string designed to generate extreme power and intense spin and bite.
POWER PRINCIPLE is a completely new. High-Copolymer, round, with a snap back as never before. The string has power, control at its best, supported by elastic additives.
