“Enjoy the experience of drilling with a reliable companion” The SOOSAN STD series _ hydraulic crawler drilling rigs have been developed to be a reliable top hammer drilling rigs for surface blasting in the quarry and civil work environment. It is comprised of undercarriage, feed, booms and power unit. These components are powered by a water-cooled Cummins diesel engine. The drill rig is equipped with a safe and comfortable cabin (ROPS & FOPS) with wide visibility and an easy operation system using joysticks. It also has a simple rod changing system and an advanced SOOSAN hydraulic rock drill. Show Less