post hole digger: 1,suitable power:25-55hp 2,hitch cat:1-2 3,auger dia:6",9",12",14",18",24" POST HOLE DIGGERSMODELJW-PD35Tractor (hp ... )25~55HPAuger Flighting Thickness6mm4mmAuger Dia6",9",12",14",18",24"Auger Pipe63mm O.D.73mm ... pin clutch - OptionalGearbox540RPM3.18:1Ratio,operating RPM:300Weight186 lbs.(Without Auger)