Bits for power drills; Core drilling bits; Power saw blades; Blades for power saws; Circular saws; Abrasive wheels for power-operated grinders; Rotary grinding machines; Stone cutting machines; Pads for floor polishing machines; Power tool parts, namely, Milling machines and grinding machines for the treatment of ceramics and metal; Cemented carbide cutting tools; Diamond-pointed metal-cutting tools; Power-operated grinding wheels; Drill sharpening machines