For A Km Vase Which Size Gromet Do You Use?

[NIGHTS OF BAGHDAD]

1 ½ inches in diameter or 1 ¾ to 2 inches in diameter?

[SmokinMoose]

26 or 30

but both need a little adjustments based on the size of your base.

Your KM precision base should use a 26 with a little bit of electrical tape on the stem or
a 30 sanded down ... the best way to sand it down is put the grommet on the end of a paint roller and use a mouse sander to get it to the right size.