Bansusu Derailleur Hanger Aluminum Alloy Rear Derailleur Hanger Hook with 2 Screws Bike Tail Hook Rear Wheel Mechanical Shift Hook for 322175/318610 Compatible with Trek Gary Fisher(Black)

Bansusu Derailleur Hanger Aluminum Alloy Rear Derailleur Hanger Hook with 2 Screws Bike Tail Hook Rear Wheel Mechanical Shift Hook for 322175/318610 Compatible with Trek Gary Fisher(Black)

Single/6/7/8/9/10/11/12 Speed Bike Chain, Bike Chain for Road Mountain Racing Cycling (one speed)