http://www.youtube.com/watch?v=kl2kKrDiZzgYouTube - 11 Cutting Cased Concrete Pile Heads with ER300L on 7t excav[/video]

http://www.youtube.com/watch?v=oP4Yo2quW88YouTube - 15 Cutting Shale In Excavation Deepening with ER250 on 7t ex[/video]

http://www.youtube.com/watch?v=SbG3wFAoEYIYouTube - 14 General - Cutting Conglomerate in Zürich[/video]

Saludos