October 2021 Update.
All Triangle Machines now come standard with a custom designed 5/16" brass beater.
The Finger Cymbal Machine has a 5/16" steel beater.
This update also makes it possible for you to use any size of your own favorite Stoessel, Grover Pro, Black Swamp, Dragonfly Percussion, Freer... or even the Shelley Tear Drop Beaters on your Machine.
A Beater Upgrade Kit is available for all previous versions of Miller Machines.