Pro Penn Marathon Extra Duty Tennis Balls - 24 Can Case Ektelon The string's unique construction of

The string's unique construction of nylon multifilament core and double-braided multifilament jacket make this a premium string for professional and top level amateur players

Tennis enthusiasts know how impressive this string feels when it makes contact with the tennis ball

Head Grommet Code: TK283A

Luxilon 4G Rough is the string used by Alex De Minaur

Pro Penn Marathon Extra Duty Tennis Balls - 24 Can Case Ektelon The string's unique construction ofPro Penn Marathon Extra Duty balls feature Penns exclusive Encore Technology for a 22% longer lasting core. Ideal for hard courts, this ball also incorporates LongPlay Felt for extended play and features SMART OPTIK felt for enhanced visibility over standard tennis balls. A best seller for many years, Pro Penn Marathon Extra Duty tennis balls are technologically advanced and offer outstanding performance and durability. Pro Penn Marathon Extra Duty