Abrasive disks for power-operated grinders; Abrasive disks for power-operated sanders; Abrasive wheels for power-operated grinders; Electric hand-held drills; Lapping machines for metalworking; Polycrystalline diamond compact (PDC) drill bits for drilling machines; Power-operated abrasive wheels; Power-operated grinding wheels; Precision machine tools, namely, hard metal tools, high speed steel (HSS) tools, carbide tools, ceramic tools, poly crystalline diamond (PCD) tools, and diamond-coated...