Bicycles Stack Exchange is a question and answer site for people who build and repair bicycles, people who train cycling, or commute on bicycles. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I just purchased a bike online and recieved it yesterday. It has a few parts that I was hoping someone could help identify.

I'm not sure what any of these are, but the two rings are metallic: enter image description here

I have no idea what these two plastic things and strap are for: enter image description here

share|improve this question
up vote 11 down vote accepted

The bottom picture is toe clips and associated straps. The top picture shows and derailleur hanger (the hook shaped thing). My best guess on the 2 black rings are headset spacers. The little nut is the only thing I'm not sure about.

share|improve this answer
The 'Nut' is a chainring bolt. – Benzo Sep 4 '13 at 15:28
@Kibbee - The appearance is consistent with a chainring bolt and "nut", screwed together. See this image – Daniel R Hicks Sep 4 '13 at 18:00
If the rings are metal, they could also be bottom bracket spacers, though that's unlikely as a spare. – Aaron Sep 4 '13 at 18:22
The round metal disc is a quarter, specifially a Georgia state quarter, minted in 1999. – Benzo Sep 4 '13 at 19:00
The small chrome nut and bolt is likely the mounting bolt that attaches the derailleur hanger to the frame – mikes Sep 5 '13 at 8:33

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.