Tool bits for machines, namely, tool bits for machine operated screwdrivers; Machine operated screwdrivers, namely, power-operated screwdrivers; Storage cases and holders specially fitted for tool bits for machines in the nature of screwdriver bits; Tool bits for machines in the nature of tool bits for machine operated screwdrivers and specially fitted storage cases sold together as a unit; Machine tool holders and tool bits for machines in the nature of screwdriver bits sold together as a unit