Orsi Optima 155 Mulcher X Demo If you have a 25-40HP compact tractor then the Orsi Optima 155 Mulcher is the flail for you. Its hydraulically operated offset side shift and 155 centimeter wide cut means you cover the cut well outside your wheels. The three point linkage attachment is available via cat one and two. The twenty, heavy duty flails cut up to 30 millimeters with ease. Adjustable rear roller, wiper bar and skids gives you a versatile variation on your cut height. Mulched material is dispatched through a flap above the roller and is left to improve the soil structure and plant growth. We used this the other day on our Yanmar SA424R compact tractor which is 26HP and were really impressed. See the video below for the results. See in action HERE