Imagine that you are trying to remove an old shower pipe. As you work to remove the pipe, it breaks off at the wall. What do you do? You could try to pry the remaining portion from the wall with a screwdriver or needle-nose pliers. However, these tools aren’t made for this type of work and often don’t get the job done and become damaged in the process. An internal pipe wrench, however, can be inserted inside the broken fitting and twisted to remove it. They are exceptionally inexpensive. They can be found at your local home improvement store. Jaws angled against the direction of turn drop forged from carbon steel hardened and tempered jaws induction hardened.it can use for 0''to 1.25'' pipes.