Tracks-plus operator-friendly controls-make Toro”s gas-powered TRX-15 and TRX-19 walk-behind trenchers more productive and easier to operate than typical wheeled trenchers. Both the 15-horsepower and 19-horsepower TRX models deliver powerful performance with four-cycle, V-twin engines. The models” low-profile tracked design provides a low center of gravity and a large footprint for increased stability on side hills and smooth operation on uneven terrain. Each model offers a low ground pressure of 4.1 psi and trenches up to 36 inches deep. Three simple controls operate all traction and trenching functions and eliminate “jerk” steering required with trenchers that have handlebar steering.