The key characteristics of the THD25 drilling rig are as follows:

1. Mounting: The THD25 drilling rig is truck-mounted, offering mobility and ease of transportation to different job sites.

2. Versatility in Applications: Ideal for foundations, mineral exploration, and water wells, the THD25 is suitable for a variety of drilling operations across different industries.

3. Pullback Capacity: The rig has a rated pullback capacity of no less than 10,000 kg (22,045 lbs), providing sufficient force for effective drilling operations.

4. Drilling Methods: Primarily designed for rotary drilling by direct mud circulation, the rig also has limited capability for air blast and D.T.H hammer drilling when fitted with suitable options. This versatility allows for adaptation to various geological formations and project requirements.

5. Drilling Specifications:
   - Hole Size: Ranging from 203mm (8") to a depth of 305m (1000 ft).
   - Pulldown Force: 10,000 kg (22,000 lb).
   - Pullback Force: 10,000 kg (22,000 lb).
   - Variable Head Speeds: Ranging from 0 to 80 RPM and 0 to 160 RPM, with corresponding torque ratings.
   - Winch Capacity: Options available for 5000 kg or 8000 kg winch capacity.
   - Mud Pump Options: Available in sizes of 5x6 or 5-1/2×8.

6. Adaptability and Customization: The THD25 can be fitted with suitable options such as different drilling tools, winch capacities, and mud pump sizes to enhance its functionality and meet specific drilling requirements.

Overall, the THD25 drilling rig offers adequate pullback capacity, versatility in drilling methods, and adaptability to various drilling applications, making it suitable for foundation drilling, mineral exploration, and water well projects.