The HYDRO DRILL by Perfecto Products, is a very versatile earth boring tool, used to eliminate excavating when putting in utility services under existing driveways, sidewalks or landscapes. Your electric drill supplys the power, and your garden hose provides the water. The standard HYDRO-DRILL kit comes with a 2" bit. Additional standard bits are available in 1" through 12" sizes. Carbide tipped auger bits are available in 1-1/4", 1-1/2" and 2" sizes.