Not heavy duty, but I have used these for years with great success. NOTE: These are for Super-8 film only. The reels could be used for Standard 8mm
Super 8 Movie Film Reel - 400 ft. (7 in.) (Bulk Case Qty 20
EMPTY SUPER 8MM 400 ft plastic reel by Carl Schneider £19.99
Music & Concerts Super 8 Movie Film Stock for sale
Super 8mm 400ft Plastic Reel and Can – Liaison of Independent
Urbanski Film: Cans, Reels, & Supplies
Kodak Vision 3 50D 7203 Super-8 Color Negative Film - NEW Fresh Kodak SEE VIDEO 41771738051
Film Reel + Box Super 8 + Regular 8, 400ft / 120m WITTNER CINETEC
SUPER-8 400 ft. Blue Plastic Movie Film Reels - BRAND NEW 5
The Online Home of the World-Wide Super 8/16mm Film Maker
Super-8 negative and reversal movie film & supplies - Super8Today
super 8mm film products for sale
8MM