What's the difference? - Sport Extra vs. Nuovo Gran Sport

Sport Extra

Rear derailleur (with hanger)

2180

Nuovo Gran Sport

Rear derailleur (with hanger)

3500/1

Shared parts

These parts share the following 4 parts:

Fixing screw

Bolt

124

780

Not yet documented

780

930-b

Not yet documented

930/B

931-b

Not yet documented

931/B