Intelligently engineered to provide the greatest drilling performance, Cat track drills are designed with a sturdy frame for long life and high availability. An advanced carousel rod changer speeds cycle times, and boom extensions enhance drill pattern coverage. With ground-level access to service points, maintenance is quick and convenient, increasing uptime and productivity levels. The proven Cat rock drills have the fewest internal parts in the industry and offer convenient field serviceability. The MD5050T is the smallest of the four track drills in the Cat line and is capable of drilling 4-inch-diameter holes to a depth of as much as 102.5 feet.