This came with a Tak FS-102 I bought from a fellow a while back, but I have not used it. Outer cell ID is 152 mm (6") and clear aperature is 127 mm (5"). There are some foam strips about 1mm thick on the inside of the cell which I presume are to make it fit a FS-102 dew shield, but it may come that way. I no longer have the Tak and need to sell. Optical surfaces as new, cell in excellent shape with no dents.
$75 shipped in CONUS. PayPal accepted, also certified checks or US Postal money orders.