Please take a look at my bits

[Hip Priest]

I am a hapless bicycle mechanic, but after much blood, sweat and tears I've managed to change my cassette, chain-ring and chain. After a quick test ride, with a proud smile across my chops, I started to tidy up the garage, and found two little bits on the floor (see below).

So my questions are:

1) Does anyone recognise what they are?
2) How big will the accident be if I try to ride without them?

Please note: there is a possibility that they've come from a bike tool, rather than the bike itself, but I couldn't find any tools with obvious missing parts.

 

[wisdom]

Looks like some form of puller to me but photos not too clear.does the bolt screw into the big bit.Did the bike ride ok?

 

[Hip Priest]

Looks like some form of puller to me but photos not too clear.does the bolt screw into the big bit.Did the bike ride ok?

Thanks for the reply.

Yes the bolt screws into the big bit. The bike rode fine, but it was literally a spin round the block. Less than a mile. I'm still planning to ride it tomorrow, but I'll take it easy until I work out where those parts came from!

 

[Ed no-more-lemons]

Certainly looks very much like this crank extractor extension thingy. This one has never stayed attached to the main body of the tool and I can't think whether I have ever had to actually use it.
Apologies for a truly terrible photo.

 

[Hip Priest]

Certainly looks very much like this crank extractor extension thingy. This one has never stayed attached to the main body of the tool and I can't think whether I have ever had to actually use it.
Apologies for a truly terrible photo.

Brilliant. That's what it is. It's come off my crank extractor. Cheers mate!

 

[Matthew_T]

If the screw fits into the bolt then I would say that it looks a lot like a stem screw (the bit that holds stem on the headset) / top cap and bolt.

 

[Graham]

1. I think the shiny silver thing means your married.

2. If you go riding without it, Mrs HP might demand to know who you're riding with. Not sure whether that will cause an accident.