... link. 5.automatic hydraulic feeding rolls. PTO wood chipper, PTO shaft, shredder, WC-8 fit with Tractor MODELWC-6WC-8Packing size ... SPLINE6x6x5206x6x520POWER REQUIRED 18hp~45hp 25hp~55hp PTO wood chipper, PTO shaft, shredder, WC-8 fit with Tractor