The bike rear derailleur is direct mount, not hub bolt mount. Please test the mount kind of the unique half earlier than ordering, if bike body with hook, as image exhibits, you need to use it.
RD-TZ31-A motorcycle rear derailleur, Suitable with GS 6 / 7 velocity SIS Index Shifting drivetrains.
Whole capability 34T, Largest sprocket 28T, Smallest sprocket 14T, Entrance chain wheel tooth distinction 20T.
Appropriate for mountain bikes, street bikes, folding bicycles and so forth.