Ditch Witch says its 420sx vibratory plow borrows from its popular compact vibratory plow, the walk-along 410sx, but adds riding capability, greater horsepower (40 hp), and several features that other articulating plows in its class do not have. One of those features is its dual-speed attachment drive, which allows the operator to quickly adapt to changing ground conditions. It is designed to closely follow the contour of the ground, which helps the attachment maintain a constant plowing depth on uneven terrain, according to the company. Another exclusive feature is its fold-down ROPS, which reduces the unit’s height by 18 inches for working under overhead obstacles. The plow is designed to install lawn- irrigation systems and communication, gas and electrical lines up to 3 inches in diameter and up to a 24-inch cover depth.