Gabriele R wrote:

Which spoke wrench for the std 12 mm brass nipples supplied together DT
Swiss Competition DB?
1)0.127 (3.22 mm)
2) 0.130 (3.3 mm)
3) 0.136 (3.42 mm)

It's the black one; .127" across flats.

All DT, Sapim, and Wheelsmith spoke nipples for 2.0mm and thinner
spokes use the black wrench.

Chalo