Two braces consisting of two rails span the curved inside of the frame. The strings can move freely between the Double Rails. This geometry also significantly strengthens the racquet head at 3 and 9 o'clock. This offers greater resistance to torsion, especially on off-center hits.
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 Boris Becker Delta Core 3 Racquets |
 Boris Becker Delta Core Power Racquets Was $149.99 Now $69.99 You Save 80.00! |
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