Derailleur Arm – the arm which extends from the rear derailleur, with pulleys to feed the chain through. The derailleur arm is spring-loaded to eliminate slack in the chain when employing smaller sized gears. Very easy to ASSEMBLE: Notes: The package requirements essential hardware skills & tools, and it will https://bikeenginekit27169.blogsmine.com/35445960/how-bob-s-furniture-lift-chair-remote-can-save-you-time-stress-and-money