Pro wins the competition for the tiniest tool on test, with the super-slimline Minitool 11.
As the name suggests, it includes 11 tools, covering all the basics but not the obvious chain tool or tyre lever.
For us, with a small summer saddle bag on, it slipped in perfectly.
A compromise on usability is made with a design so small though, and you’ll need strong hands to get the firmest of bolts loosened, so keep that in mind ahead of purchase.
If size is your key requirement you won’t do much better.