The black brake band, bolt and white nut for all Louet wheels except the S45/Victoria/Julia.
This is the full kit that includes all the parts needed to replace the brake band mechanism on your Louet wheel.
The full kit includes:
Tension Nut (note, current tension nus are white)
Fits all Louet wheels except the S45/Victoria/Julia.
For the individual parts go here.
For the Victoria set go here.