Altus RD-M310 Rear Derailleur 7/8 Speed Bike Rear Derailleur Direct Mount

1x RD-M310 Altus Rear Derailleur (Long Cage - Black). Model: RD-M310 Altus. Electric Neck Pulse Massager Pain Shoulder Relief Body Muscle Relax with 6 Modes. Mount Type: Standard derailleur hanger mount.

eBay