Shop auger drive units and auger bits in sizes from 6" to 36" for post holes, tree planting, and ground engagement work. Every auger at AttachmentsUSA is verified for mount compatibility, PTO or hydraulic drive requirements, and machine capacity. Our Phoenix AZ specialists confirm the right auger setup for your tractor or skid steer — including bit diameter, shaft type, and torque rating. New and used inventory in stock with confirmed fitment before shipping.