The blades are ordinary Fusion blades, so far so good. The pack of 12 is obviously an attractive proposition. But: are supplied 4 sets of blades 4 blades, but in each case filled with only 3 blades, thus making a total of 12 blades. Why has not simply fully populated blade 3 sets, each with 4 blades, is inexplicable to me. So you would have saved a set of blades, also the packaging could be smaller by a quarter. If anything, as only customer deception may be aimed by a bigger package. In any case, it is unprecedented senseless waste of material. Therefore only 3 stars.