Yellow: 5 sets Yonex BG66 Ultimax SP string Pink: 5 sets Yonex BG66 Brilliant SP string Total: 10 sets. Please note that the color of the pink string in the photo may differ. Core: High-strength nylon, multifilament. Outer: High polymer nylon, braided. Length: 10m Thickness: 0.65mm Made in Japan. This product is the SP series, not the JP series. The SP series is distributed in Southeast Asia. The packaging material is plastic, not cardboard. There is no particular difference in quality. The product may differ from the photo due to the use of new packaging, but the contents are the same. Individual sales are not possible. Returns are not accepted. Please do not purchase if you are sensitive to this. Yonex BG66 Ultimax SP string YONEX BG66 Ultimax SP string YONEX BG66UM Badminton string BG66 Ultimax UM SP Badminton string YONEX Badminton String Lee Chong Wei Lin Dan Kento Momota Kento Momota Viktor Axelsen Kevin Sanjaya Sukamuljo Marcus Fernaldi Gideon Mohammad Ahsan Hendra Setiawan YONEX Badminton String Gatt (string) Gen (string) Sutoringu (string) Badminton (badminton) Yonex (Yonex) Sutoringu (string) Nanofurea (Nanoflare) Nanosupiido (Nanospeed) Borutorikku (Voltric) Riiningu (Li Ning) Bikuta (Victor) Yonex (Yonex) Apacs Maxx