Challenger PTD Series disc mower-conditioners do it all... cutting through the toughest conditions, while gently handling valuable crops; uniformly conditioning plant stems for fast drying, and placing the crop into your choice of a windrow or swath. With their center-pivot design, the PTD12 and PTD15 even allow you to cut back and forth and on either side of the tractor. Unlike other machines, though, Challenger mower-conditioners feature a rugged box-beam mainframe that suspends the header in much the same manner as a self-propelled machine. The benefits include better ground clearance and outstanding vertical and radial flotation.