Extensions for power tools; Drill chucks for power drills; Drilling machines and parts therefor; Power-operated polishers; Power tool parts, namely, collets; Electrical drills; Power drills; Abrasive disks for power-operated grinders; Pneumatic ratchet wrenches; Hydraulic pumps and motors for hydrostatic systems, comprised of pumps, motors, valves, switches, sensors and electronic controls, for hydraulic drives and force transmission in machines, machine tools, grinding and food processing ma...