For sale is a lot of three Ultraflo Corporation - part #6100122109 valve stems. Stem has stamped on end the number 94612. These are stainless steel with approximate measurements of: Length 11-5/8" long, diameter 5/8", slotted end is 7/16". Each stem has two bored holes - inventory tag says these are for 6" Keystone valve.
I obtained from a Lime Co inventory reduction sale.