I was having a brain fart for the 8" size. . . but there were 10" floppies for a while. They had a clamp down transport that was sort of reminiscent of a record player with a lid. There weren't too many of them around. The dentist I work for did some for had an old computer that used them to load the system on the computer. He kept the system disks in an old 78 RPM record album. He had to reload the system about every two weeks or so or every time there was a power failure. My recollection was they were 128K and IIRC the system was THEOS. I don't even remember the name of the computer which had a built in keyboard and an eight or nine inch green screen monitor, also built in. The OS and data was later moved to a PC using yes, 5 ¼" disks. The 5MG HD platter on that old system was about 20" in diameter and was housed in a separate cabinet. . . and had to be driven to San Francisco to be defragged by the manufacturer about every three months or so.
The last time I ever saw any 10" floppies was a box of five of them were for sale for one dollar at an electronic surplus store called HSC in Sacramento. They had a main store down in Sunnyvale.
I think all but 2 of the 10” disks were in my boss’s filing cabinet. He required me to sign my life away to get possession of the 2. I was the only person in the company who knew how to use the computer that they worked on, but I couldn’t pry more than 2 of them out of him.