The Hasselblad 50200407 4.5x6 Flextight Original Holder is exclusively for the Imacon/Hasselblad Flextight 646, 848, 949, 2848, Precision, Progression, X1, and X5 scanners. It holds one 645 format unmounted transparency or negative, with a 45x57mm total scanning area. There is enough scanning area to capture the data imprinted upon the film strip.