December 22, 2014
Double ended cone wrench
A bit uncomfortable as you've not got a softer handle on one end...you've got a business end on both sides.
While it's a bit awkward to use compared to the regular cone wrenches, it works well enough for the sizes that you don't use too often. I tend to have a few of these where I'm doubling up on sizes just to be able to have one for each hand if I need to hold one side when turning the other.