This FY280 water well drilling rig can drill 280m depth in solid underground formation. it uses 70kw engine, steel crawler system, with powerful air compressor, it can drill more than 100m one day in all hard layer, It uses 6m, 3m,2m, 1m drilling rods, so it can drill 6m depth one time. this is a big advantage. 

With mud pump, it can drill with mud, so it is OK to deal with different underground formation. this is a good choice for you to drill deep water well in rocky area.