I always used to use an adjustable wrench. You could get a Knipex pliers wrench if you want to be cool about it.
Originally Posted by
HillRider
They are like. olives. The very smallest size they sell is called "Large".
There is actually a little known "short" size. Supposedly they still have it. They used to keep the cups under the counter because they were embarrassed someone would want such a small quantity of coffee