The Xundah YD-H75 is a massively constructed, largely plastic derailleur - but it looks like it means business in a Shimano Tourney Megarange kind of way. I have no evidence for or against its performance or longevity.

(I also wrote this for the Saiguan HG-54).

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1. •Brand: Xundah
   

2. •Country: China
   

3. •Date of introduction: 2007?
   

4. •Date of this example: unknown
   

5. •Model no: YD-H75
   

6. •Weight: 341g including hanger plate
   

7. •Maximum cog: 34 teeth
   

8. •Total capacity: 38 teeth
   

9. •Pulley centre to centre: 96mm
   

10. •Index compatibility: 7 speed
    

11. •Chain width: 3/32”
    

12. •Logic: top normal
    

13. •Pivots: two sprung pivots
    

14. •Material: plastic knuckles and outer parallelogram plate, steel inner parallelogram plate and pulley cage plates
    

0361/M