Klein 631 7-Piece Cushion-Grip Nut-Driver Set 3-Inch Shanks
The Klein Tools 7-Piece Nut-Driver Set - 3'' Shafts is the best set of nut drivers under my criteria because it has a fully hollow shaft. This allows you to work on longer screws that you normally wouldn’t be able to with a solid shaft. Furthermore, the tip of each driver is magnetic. That is useful because you don’t have to worry about accidentally dropping and losing a fastener after removing it. Another great thing about this set is that each of the drivers has a cushion gripped handle. This makes it more comfortable to use by cutting back on hand fatigue, thereby allowing the user of the tool to apply more torque. That makes this a great option for professionals.