Cutters are square or rectangular frames with mounting pins attached. Used to control natural or artificial light. Can be used to protect the camera lens from flares, control spill light from other sources, or keep light from reaching an area on the set.
Floppies are Cutters which have an extra layer of material sewn to one edge and held in place with Touch Fastener until needed at which time the Cutter becomes twice its original size.
Flags are smaller cutters than floppies and are available in various sizes for desired cutting possibilities.
Blades are long rectangular cutters, usually the length of a standard floppy but a width of a small flag