Luxilon Big Banger Timo 17L Tennis String Set TiMO Banger 17L maintains good control without compromising too much in durability. According to , the addition of Titanium and Molybdenum, two materials used in aeronautics, provides this string with unique characteristics... Size - (See Description) | Color - (See Description) Authorized Luxilon Dealer. All racquets are strung and ready for the courts! SEE SELLER DETAILS FOR RETURN POLICY.