Unit includes mounting bracket, auger drive head, hoses and quick disconnects. Must order Auger Bit for complete unit. HTF STYLE AUGERS: For tree and shrub planting Fabricated boring head Two-diameter design Hardened, bolt-on teeth Hardened “fishtail” point HD double flighting 4′ overall length HDF STYLE AUGERS: For light to moderate ground conditions Fabricated boring head Hardened bolt-on teeth Hardened “fishtail” point Heavy-duty double flighting 4′ overall length HDC STYLE AUGERS: For difficult ground conditions, compacted soils, heavy clay, asphalt, frozen ground fracturable rock HD cast boring head Hardened, drive-in teeth Hardened “fishtail” point Heavy-duty double flighting 4′ overall length SRR ROCK AUGERS: For solid, fracturable rock, frozen ground and compacted soils Bullet style teeth Fabricated boring head HD single flighting 2″ hexagon collar only 0.75″ thick bottom flight and a hardface outer edge 4′ overall length