Nipples
Alpina self-locking nipples have a nylon shock-absorbing insert. This part ensures that the spoke is less likely to come loose.
Alpina self-locking nipples ABT / ABS
+ Since there are no chemical sealents or metal-to-metal interferance, it is possible to adjust the torque several times without any problems of tightness.
+ The mechanical locking system acts on the whole surface of spoke thread at 360°.
+ The clamping force can be adjusted by varying the size of the hole in the self-locking insert
+ The only locking system where maintenance can be performed without losing force
+ The only locking system that act over a large area with the possibility to do all necessary maintenance