Here you go Cory, you can clearly see the tape width on one of these rollers, and theres a 1 inch roller as well. The Athan roller is different. And Studers often have a roller that is only the width of the tape. But these are Ampex originals.
I have a Fostex 8251261 rec/rep card for an E16 for sale. I don't know its condition, its probably new and unused. I have no way to test it.
$10 plus postage if you are interested. PM me, or look on my site, Doug Jane Recording for details.