ZRATOR is now avaiable for WALKER MOWERS. Providing all the same features and benefits of the sit down and stand-on models. Allowing the operator to turn left, right, forward or even in reverse without raising the tines out of the ground. NON-STOP AERATION. ZRATOR is the only STEERABLE FRONT MOUNT TRUE CORE PLUG AERATOR. The model ZRE-WKR comes standard with a Two Pin Mounting System, Electric Lift for ease of Transport. Flat Proof Tire.