These are original blank viewmaster reels (personal reel mounts). Six pieces in packaging and with sleeves (original or white). They are used to put in images you make with a viewmaster camera. For example the View Master Personal Camera, the Mark II and the Czech Meopta Stereo 35 and Stereo Mikroma.
No damage and in good condition.
The reels can have a little writing on them, not more then that. For example a small name, note or number.