Shimano Deore LX RD-M580-GS Rapid Rise Rear Derailleur RD-M580 Medium Long Cage

Vintage Shimano Deore LX RD-M580-GS rear derailleur for Shimano 9-speed mountain bike drivetrains.

NOS

Rapid Rise low-normal design for MEGA 9 Drive Train systems with medium cage for wide-range MTB cassettes.

Looks like long or medium cage. 

NOS Shimano Deore LX RD-M580-GS rear derailleur with light storage wear. Rapid Rise. Looks like long or medium cage.