*Note - when inflating ball with a pump it is critical that the needle is lubricated before insertion. We suggest soft soap would be a suitable substance.
My shoulder was kinda sore after played badminton using my Apacs Nano 9900 with 24 lbs string. I wasn't sure if the racquet was too light or the string was too high for me. So, I bought Fleet Z-Force II with 22 lbs string and I don't feel that kind of sore any more, and it's nice racquet as well."