Bicycle Single-speed Modified Rear Derailleur Tail Hook Rear Shifting Bike Rear Derailleur Hanger

Label:Yes Size: 54 * 44 * 4mm Color: Black / Red Net weight: 13.7g Package includeS: 1pc Rear Derailleur Tail Hook Material: 7075 Aluminum Zinc Zinc Zinc Zinc Alloy Type: Bicycle Rear Derailleur Tail Hook

Features: 1.7075 aluminum Zinc Zinc Zinc Zinc Alloy material, higher strength, corrosion resistance, anti-rust 2.CNC workmanship, solid and firm, very durable. 3. The single-speed bicycle can be modified and then normally installed and then the transmission can be adjusted, so that the multi-stage flywheel can be installed to realize the rear shifting.