Spin Japan's m3 has about 160m left. The others are multi, poly, nylon, and other types of strings. The yellow poly string can only string half a court. Babolat Fiber Force x 2 Signum Pro Multi x 2 Approach or Spin Japan nylon x 1 This is a collection of strings from when I was a tennis coach. If you bought them normally, it would probably cost around 16,000 yen.