Bike Rr Derailleur Hanger Aluminum Tail Hook Extension Extender Bike Accessory

Incrse about 41mm/1.6in length, incrse the tooth volume of 20 to 22 teeth, high performance. It is often used when the large teeth of the rr flywheel are changed to 36T/40T/42T/44T/46T/50T/52T/56T. The bike wheels can change speed smoothly with this tail hook, high strength. Item Type: Rr Derailleur Hanger Material: Aluminum Length: Approx. 6cm/2.4in Width: Approx. 2cm/0.8in Weight: Approx. 19.0g/0.7oz Incrse about 41mm/1.6in length, incrse the tooth volume of 20 to 22 teeth, often used when the large teeth of the rr flywheel are changed to 36T/40T/42T/44T/46T/50T/52T/56T