Aluminum Alloy+Plastic

For Ordinary Bicycle, Child' S Bicycle, Mountain Bike, Folding Bicycle, Tricycle, Etc. Type: Bicycle Rear Derailleur. 1 Bicycle Rear Derailleur. Model: For Shimano RD-TZ31. Front Difference: 20T. Waterproof Bike Light Solar Charging Bicycle Front Headlight 2 Lighting Modes.

For Ordinary Bicycle, Child' S Bicycle, Mountain Bike, Folding Bicycle, Tricycle, Etc. Type: Bicycle Rear Derailleur. 1 Bicycle Rear Derailleur. Model: For Shimano RD-TZ31. Front Difference: 20T. 2-Pin 12V Electronic LED Flasher Relay for Motorcycle Turn Signal Bulbs Hyper.