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Simple yet effective, this rubber clip snaps around your Purple Sky flag pole and allows you to attach nearly any bicycle rear light. A super simple way to increase your night (or daytime) visibility even more. Works with any rear light designed to attach to a vertical tube. 1 inch (25.4mm) outer diameter compatible with almost any bicycle rear light designed to attach to a seatpost or other vertical tube. 1 inch tall with a 1/4 inch (6.35mm) ID. Light sold separately; note that if you use a RapidX2 Light, you don't need this piece.


1. What exactly does this do?

It attaches to a flag pole and provides a place to attach a light. It's a cylindrical piece of 1 inch OD rubber with a 1/4 inch ID hole down the middle, sliced into a C shape so you can snap it over your flag pole.

2. Will it work on my flag pole?

If your pole is anywhere from 6mm (a little smaller than 1/4 inch) up to about 5/16 inch (8mm), it will work. Most flag poles are either 6mm or 1/4 inch, so yes, it should work on your pole, whatever brand you have.

3. What kinds of lights can I put on it?

Any light that will attach to something 1 inch diameter. This includes all upright bike rear lights, so it's great for putting a rear facing red light up high. Note that if you use a RapidX2 Light, you don't need this piece (but it is required for basically all other lights).


  • Choose a spot, snap it on, and attach your light. A light that is adjustable for angle works best, since most flag poles angle back as you ride.
  • Sized to fit all known flag poles and all common types of bicycle rear lights.
  • Neoprene rubber, 1 inch OD x 1/4 inch ID, 1.25 inches long. Sliced vertically on one side to make a C shape so it can be snapped over your flag pole.
  • For use with any flag pole from 6mm (just under 1/4 inch) up to 5/16 inch (8mm) in diameter.