Bits for power drills; Blades for electric rotary cutting machines; Chucks for power drills; Connecting rods for machines, motors and engines; Drill chucks for power drills; Electrical drills; Engraving machines; Extensions for power drill bits; Grinding and polishing machines; Power-operated grinding wheels; Power drills; Power saw blades; Power tool parts, namely, collets; Screwdrivers, electric; Wood grinding machines