I goofed there, I really thought "bumper" was like 3M's trademark or whatever, in any case they call them "Bumpons", not bumpers. Anyhow, I do need the exact size and color, inasmuch as replacing the feet on 35 year old disk drives is a "need"...
I kept looking for "rubber feet", I won't tell you what I found on Aliexpress...
Anyhow, the next confusing thing is the color, what they call "white" and "true white" is a big difference. "True white" looks like game show host teeth, regular white looks like my walls.
Lesson here is don't look under your collection of 8 bit trash too closely!
And just for fun, I ordered the Bumper Specialties ones, while they are perfectly good bumper rubber feet bumpons, they are not the same shape.
I think it's time to back away from the computer and go outside maybe?