How does the faucet of the faucet on the basin disassemble?
I used to change this is also quite cool down, you can take the hardware store called the boss to help you, anyway, you have to buy a new tube it.
With the pliers to clamp the leading water into the water pipe iron counterclockwise turn can be removed (may be a little scale to force point)
If you can not use the stubborn unscrew, it is only saw this approach.