- Unique, patented device that shifts the position of a road bike's derailleur to make it possible to use a wide-range MTB-style cassette
- Does not compromise shifting in the cassette's smaller sprockets, but allows the derailleur to work with a 40T cassette
- Material: 6061 Aluminium
- Weight: 19 gr

Compatibility:
10 cassette speed:
11-32: Not Required
11-34 / 11-36 / 11-40: Single chainring (for double chainring check the capacity of the derailleur)
11-42: Not supported
Cassette 11 speed:
11-32: Not Required
11-34 / 11-36 / 11-40: Single chainring (for double chainring check the derailleur capacity)
10-42 / 11-42: Not supported