The new ROC F9C SmartRig lets operators lay out shot patterns on a computer and then helps them follow through with GPS-guided, automated drilling for higher accuracy and speed. Along with the accurate drilling positioning, this crawler drill adjusts impact power and feed pressure to suite rock conditions. Computer placement eliminates the need to manually site the drill, or even mark holes on the ground. The ROC F9C drills holes between 3 1/2 to 5 in. in diameter and up to 98 ft. deep. The SmartRig also features an optional silence package.