For your consideration, here is a Vintage Package of 3 Baia Dual 8 Plastic Film Reels and Plastic Storage Cases, 200 Ft capacity.  There are inserts for Super 8.  The diameter of the reels is about 5 1/4 inches.  There is some wear on the packaging.  It will be mailed in a box for protection.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (443.907p-.16bb)