Double Square Brass Nipple, 14g/16mm, Black, 100/Count

- Allows for truing and tensioning of wheel using internal or external wrenches\n- Polyax design features a round shape of the head that works like a ball joint between the rim and nipple ensuring a better spoke/nipple line\n- Aluminum SL: 7075-T6 aluminum, special coating on thread and nipple surface to further reduce corrosion and reduce friction between spoke/nipple and nipple/rim. Secure Lock prevents nipples from loosening via a mechanical means instead of a thread locking compound or paste \n- Brass: nickel coated to ensure good corrosion resistance