Abstract: A grass and soil trimming system comprises a motor driven yard tool. The tool has a housing in a generally cylindrical configuration with a periphery and a female threaded interior and an interior locking screw. The female threaded interior of the mounting screw is adapted to screwably couple to a male thread of a drive shaft on the tool. A first pair of metal cutting blades is coupled to the periphery. The blades are adapted to cut and dig soil. The blades have a generally triangular configuration. A second pair of metal cutting blades is coupled to the periphery. The blades are adapted to cut grass. Each blade has a generally triangular configuration. The second cutting blades have a generally 90 degree bend.