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The Ditch Witch HT220 is built to provide exceptional digging in both rock and dirt, the HT220 is a hydrostatic trencher with 220 horsepower (164 kW). Designed for large installations — 12 to 24 inches (305 – 610 mm) wide and 4 to 8 feet (1.2 – 2.4 m) deep — the machine has an exclusive flywheel gearbox that delivers tremendous horsepower to the attachment on demand while protecting the hydraulic system and other components from shock. Operator vibration is further minimized by trencher stabilizers, standard on each machine, that isolate vibration when digging in rock. Working in harsh conditions demands equipment that is extraordinarily durable and sturdy, and the HT220 does not disappoint. From its rugged undercarriages to its reliable controls to its forged, heat-treated, high-alloy steel headshafts, everything on this machine is designed to endure the particularly rugged conditions of rock-laden jobsites.