Shimano Tourney TX800 mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choice.

Oversize 13-tooth tension and guide pulleys to reduce noise and wear
Top normal spring for use with Rapidfire shifters
8-speed compatible
For use with 28 to 34 tooth low rear sprockets, total capacity 43 teeth
Speed 8 Speed
Speed 7 Speed
Size SGS – long
Di2 No