The punches used for FUSE vary from 0.75mm to 0.9mm (average 0.8mm) The punch to be used depends on how widely the hair of a FU is spaced out while emerging from the skin. Trying to extract larger FUs with punches whose diameter is less than that of the FU at point of emergence from the skin is, obviously, illogical. We, however, do not use 1mm or larger punches.