DT SWISS SPLINE ROAD 2015 RC 28 Technical Manual page 51

2. If necessary, loosen the spoke by hand.
a) Slide the spoke holder onto the spoke.
b) Unscrew the nipple using the nipple wrench.
Take care that the nipple does not fall into the
rim profile.
Closing Steps
Replace the spoke.
®
SPLINE Wheels - Technical Manual
Link
see following
50