The most common seatpost size is 27.2mm. You can check out Bikepedia.com to search for your bike and view the technical data for your seatpost size. Or, download our Seatpost Measuring Guide and print it to determine your seatpost size.
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Our fulfillment partner Mission Bicycle Company ships out of San Francisco, California.
You’ll get the light itself, 2 name brand AAA batteries and a 2mm allen wrench and Torx wrench for installation. All lights now come with both Torx and Allen screws and wrenches.
Nope. Our light stays on when it senses ANY motion at all, even the little sways and fidgety movements when at a stoplight, and stays on for 1 minutes after it's stopped completely. Not to worry.
Blink / Steady is small and sleek because it does not incorporate a universal clamp.
No. The setscrew that attaches the Blink / Steady to your seat-tube has a soft nylon tip. You can tighten it all you want and it won't leave a mark.