Mount a Planet Bike Eco Rack or other brand rear rack to your bike when your bike frame does not include rack mounting eyelets.
The L-bracket allows allows you to mount a reflector or single-hole-mounted bike tail light to racks without a mounting hole.
Use with a Planet Bike Rack Bracket ($4.99) to mount any of these Planet Bike Tail Lights:
Planet Bike Blinky 7 7-LED Bike Tail Light with Battery
Planet Bike Superflash Rear Light
Planet Bike Blinky Superflash Stealth Half Watt Bike Tail Light
Planet Bike Superflash Turbo 1 Watt Bike Tail Light
Biologic Bike Mount for iPhone 5
Planet Bike Rack Blinky 5 Bike Tail Light with Rack Mount