Description:The purpose of the rear derailleur hook of the bicycle is to connect the frame to the rear derailleur of the transmission, the upper end of the tail hook is connected to the frame, and the lower end is connected to the rear derailleur of the transmission. The strength of the tail hook is relatively low. When the rear dial of the transmission is hit by a side impact, it may bend or even break, thereby protecting the rear dial of the transmission. For your easy installation and remove, we have matching screws for you, you can install and remove it easily.Fit for most of bike, cyclocross bike, hybrid bike, mountain bike, road racing bike, etc.This is non-OEM product, accessory only!SpecificationsColor: Silver ToneMaterial: Aluminium AlloyThread Diameter: 9mm / 0.35”Hole Diameter: 10mm / 0.39”Size: 6.3×3.2×0.8cm / 2.
