Shimano Saint RDM 820 SS1 Shadow Plus rear derailleur, 10-speed, 2013 model

Shimano XT RDM 786 SGS Shadow Plus rear derailleur, black, 10-speed, long cage.

Shimano XT RDM 786 SGS Shadow Plus rear derailleur, colour: black, 10-speed, short cage

Shimano XT RD-M781-GS Shadow rear derailleur, colour: black, 10-speed, with a shorter cage

Shimano XT RD-M781-SGS Shadow rear derailleur, colour: black, 10-speed, long cage