The Bulldog trench rollers from Stone Construction Equipment feature the Snap-Tek system, which allows a manual unit to be converted to remote operation by plugging in the receiver. The Snap-Tek system also supports the on-board diagnostics, electronic status readouts including an hour meter, engine rpm, battery voltage, low oil pressure and high engine temperature. In addition, the system provides quick-change capabilities on all electronic components for fast, easy service. The Bulldog is powered by a 20-hp Hatz Twin engine and is available with padfoot drums in 24-inch and 34-inch widths. It provides 15,000 pounds of centrifugal force for optimum compaction in a single pass.