Mighty Mac™ Wood Chipper Shredder 3” Max Capacity - Briggs OHV Engine (SC800)Mighty Mac Wood Chipper Shredder Made in the USA! This smaller wood chipper shredder is fit with a centrifugal clutch, which allows for easy no load starting on the operator and machine. Unlike direct drive machines, the centrifugal clutch allows the engine to disengage when stressed under a heavy load. This allows the engine to gain RPMs faster and more efficiently pulverize the material. The shredder chipper is small enough to fit in the garage