Expander (li-tubes tse 6 ka.

1. Tube bophara: φ7mm-φ25mm (Khetha e le ‘ngoe).

2.Ho atolosa bolelele: ho latela litlhoko tsa moreki

3. Ho atolosa lebelo: 5-11m / min

4. Mohlala: 1tube 2 tube 6 tube bakeng sa khetho