Genuine Optikinetics 3 inch Cassette Glass - multiple sets.
If you have some cassettes with broken glass, put these in.
Optikinetics haven't made these glass cassettes for a few years, and recently I bought all their remaining stock.
There are 14 sets on this tray, enough for 7 cassettes.
They will not be making any more, so when it's gone, it's gone.
Thanks for looking.