Sapim Brass Polyax Nipples
They are great...work perfect and don't have to worry about corrosion.
Sapim's original Polyax brass nipples have a rounded profile, which allows up to 9 degrees of rotation for improved spoke alignment and durability.
Brass is an excellent material choice for nipples due to its superior corrosion resistance and high strength. Silver nipples are nickel-plated for a long lasting high quality finish.
We highly recommend the use of brass nipples on wheels intended for daily training, commuter use, e-bikes, or use in wet/corrosive environments.
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They are great...work perfect and don't have to worry about corrosion.