POST HOLE AUGER HEAVY DUTY 150MM MOUNTHOLE IS 51MM THIS AUGER HAS REPLACEABLETEETH ON A VERY HEAVY MOUNTING PLATEHeavy Duty Auger, featuring replaceable tungsten teeth on a sturdy mounting plate, ideal for post hole digging and other heavy-duty applications. The auger's 150mm (6") diameter is perfect for tackling larger projects with ease.