Spoke Nipples
Nipple File:Http://www.bikecollectives.org/wiki/images/6/65/Download.jpg
The nut that secures the end of a spoke to the rim of a bicycle wheel. Nipples have a normal right-hand thread, but because they are normally seen from the "bolt" side, it is often confusing which way to turn them. It is as if you were watching the hands of a clock move clockwise, but the clock was transparent, and you were looking from behind it.
Of all the things bicycle mechanics do, adjusting spoke nipples is the one that requires the most skill and experience.
Nipple weights
Brand Gauge/Diameter Material Weight Comments
Hi-E 15/1.8 aluminum 0.235 requires special socket wrench Wheelsmith 14/2.0 aluminum 0.344 DT 15/1.8 brass 0.850 old-style disc-shaped DT 14/2.0 brass 1.000 new-style trumpet-shape Wheelsmith 14/2.0 brass 1.063 DT 15/1.8 brass 1.100 new-style trumpet-shape DT 14/2.0 brass 1.140 old-style disc-shaped Fiber Flight 14/2.0 plastic 7g/36 (claimed weight)