On Mon, 15 May 2017 04:27:58 -0700 (PDT), robobass
wrote:

http://i.ebayimg.com/images/g/wysAAO...VN/s-l1600.jpg

I am in a metric country, but I'm sure the principal applies in North America as well.

This is a very common socket kit here. There are many brands, many manufacturers, all are basically the same. The box is very useful, except for one incredible annoyance. The sockets go in 1mm increments from maybe 4 or 5 up to 14mm. No one has ever used the 14mm socket, ever. Why wouldn't they leave it off, and use a 15mm socket in that last place instead?

And, why don't other people ask a questions like this?
Because there are several different metric "standards" and if you
work on Japanese stuff you WILL use the 14, and a 15 would be a total
waste.On a Chevy and most weiner wagons, you will never use a 14. Same
goes for 11 vs 10, Japs use 10, EVERYWHERE. GM and Wiener wagons use
11.
A lot of bikes use 15.