One plastic, 100 foot camera take-up spool for your Bolex or other 16mm cine camera that accepts 16mm 100 foot rolls of film.
Minolta 16 - My Many Muses
OwyheeSound
16mm Movie Film Reel - 100 ft. (3-5/8 in.)-TA16100R
BOLEX PAILLARD UNDERWATER HOUSING S16 – Old School Cameras
Midcentury Modern 16mm Film Reel, 7 400 Foot Vintage Aluminum
16mm SINGLE PERF Medium Contrast BW Orthochromatic Reversal Film 01 ISO / 100 ft Roll on Daylight Spool / Estar Polyester Base / Process: BW Reversal
16MM FILM - SINGLE PERF - FPP YETI BW REVERSAL - 100 FT
How to Handle 16mm Film ANALOG ESSENTIALS
Collections – Film Photography Project Store
How to Cut and Load Film for the Goerz Minicord – Beyond the Aperture