Bits for power drills; Blades for power saws; Power tools, namely, drills ; Drill chucks for power drills; Power drill bit extensions; Tile removal and cutting machines; Power tools, namely, burrs; Machine parts, namely, fasteners for power-operated sharpening stones, namely, grindstone mounts; Polishing system for use in single-head machines comprising grinding and polishing discs for stone profiling and edge; Precision machine tools, namely, hard metal tools, high speed steel (HSS) tools, carbide tools, ceramic tools, poly crystalline diamond (PCD) tools, and diamond-coated and diamond-uncoated tools, and hard metal tools, all for use in the cutting and forming of materials by others