Park Tool ND-1 Nipple Driver
A great time-saver! Neatly designed to self-center and drive conventional nipples quickly and easily during wheel building. Built with a comfortable, dual density grip and lined with precision bronze bearings to ensure a long, smooth running life. The ND-1 works with rims up to 50mm deep.
Such a simple tool, but it makes building wheels so much easier. Not sure how I got by without it before. If you build wheels, this tool is worth it! Makes the building process much more efficient. Also, the Park Tool quality is awesome. Looks great and well worth the small cost.