This is an authentic racket purchased through official channels. A warranty card (with the purchase date from Mercari filled in by us) and a soft case are included. We offer a discount on shipping for multiple purchases. Stringing is provided as a service (string and labor are free). We cannot offer a discount for rackets without stringing. Stringing will be done using a Yonex PT8deluxe (electric) stringing machine. Two-piece stringing. You can choose from the following strings (all white): * Exbolt 68 * Exbolt 65 * Exbolt 63 * Aerosonic * Strong Titan * BG66 Ultimax * BG66 Force * Nanorgy 98 * Nanorgy 95 * Li-Ning No.1 * Gosen Ryzonic 58 Please let us know the string type and tension after purchase.