TerraCycle - Rubber Light Mount
Your Price: $4.00
Simple yet effective, this rubber clip snaps around your 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 (6.3mm) ID. Light sold separately.