With the TUNE Linientreu the derailleur can be perfectly adjusted by laser.
Whether you are a professional or novice mechanic, with the unique "Linientreu" you can set up your rear derailleur in minutes.
The best thing about it: with our precision laser the derailleur is always set exact.
The tool is suitable for 7, 8, 9, 10 11 and 12 speed setups. The Tune Linientreu gets attached by an allen or Torx key on the derailleur mounting bolts. With the aid of the linear laser, the lower and upper stops on the derailleur can be adjusted precisely.