... 1. Post hole digger,many types that can selected 2. Augers is from 6" to 36" DiggerMODELPOWER REQUIREMENTAugersDescribetionPD2015-30 HP6", 9 ... -PTO,D-DIGGER,20HP25HP are recommendatoryNotes:thickness of Augers Flighting: 4mm or 6mmDiameter of Augers: 6",9",12",15",18",24",28 ...