http://DiggingBits.com offers the lowest prices on all your machinery attachments. These Digga Australia rock augers suit drive units with high rates of auger torque on machines up to 20 tonne and will dig a holes up to 1200mm in diameter. Our range of augers provide the below variety of features: - 6mm to 12mm flights - 65mm round and 75mm square hubs - 42mm to 141mm pipe - A range of boring heads - 1200mm to 1500mm high (extensions available) You will not find better quality and cheap priced augers for sale anywhere! With Digga auger and auger drive units, you can drill through earth, clay, concrete, bitumen and most fracturable rock.