The design of the CH 4 is based on the use of an excavator base carrier (in the 8-10 tons weight class) equipped with a modular drilling mast and a multipurpose rotary head. The extended reach of the boom combined with the mast rotation movement, ensures that the CH 4 can be used to perform a wide variety of positions covering a large work area. The stability of the machine even at its maximum reach is granted by the variable-width undercarriage. The machine features two powerful winches and a muiltipurpose rotary head providing up to 43.7 nominal kNm torque. The modular mast design allows the use of kelly bars of up to 9 elements and 3.5 m in length to achieve depths of over 25 m. In CFA configuration, the CH 4 can reach 11.9 m pile depth, thanks to the use of a special extension. In addition to the kelly and CFA set-up, the machine can be configured for micropiles installation. The cabin and the controls of the CH 4 are optimized to operate in confined spaces with the goal to guarantee great ease of use and manoeuvrability in any site condition, with a view to achieve maximum comfort and safety for the operator.