A long time ago, I mean long, like thirty years or more, I bought two folding Allen wrench sets. One was supposed to cover the range of 1.5 to 6 mm, and the other 4 to 10. I have been carrying the small set in my pack while riding for five or six years.
Maybe this summer sometime, I figured out while trying to adjust some Hayes levers that the alleged 2 mm wrench was in fact 3/32".
Last week, I went to use the big set to adjust something and determined that the 6 mm was actually 1/4", so I went out and bought two new sets.
Thinking back, I can recall various times going back years where I haven't been able to find the right size on these two tools, and have wound up rooting in my loose wrenches for the right one.
I am going to go outside and count to make sure that there are actually four wheels on my van.
J
Maybe this summer sometime, I figured out while trying to adjust some Hayes levers that the alleged 2 mm wrench was in fact 3/32".
Last week, I went to use the big set to adjust something and determined that the 6 mm was actually 1/4", so I went out and bought two new sets.
Thinking back, I can recall various times going back years where I haven't been able to find the right size on these two tools, and have wound up rooting in my loose wrenches for the right one.
I am going to go outside and count to make sure that there are actually four wheels on my van.
J
big difference in not knowing how to drive and not knowing how to read. 
