- Cast or welded kelly box optional (130×130/150×150/200×200mm etc.)
- Optional straight or tapered auger
- Single cut or double cut optional
- Top RP4 pilot bit is optional
- Wear protection with hard surfaces or wear strips
- Compatible with most rotary drilling rigs on the market, including Bauer, IMT, Soilmec, Casagrande, Mait, XCMG, etc.
- Drilling diameter up to 5000mm
- Can be customized according to specific requirements