Hand-held machine tools for providing torque; power tools, namely, torque wrenches, battery-operated wrenches, hydraulic wrenches, electric wrenches, pneumatic wrenches, power-operated side wrenches, power-operated gate valve wrenches; power-operated impact socket wrenches and accessories therefor, namely, impact sockets, hexagon socket supports, and hexagon socket inserts; hydraulic units with an electric drive or pneumatic drive for use with hydraulic torque wrenches