Sharp as hell....

I like that it fit my Alto’s cutter. The blade is slightly thinner than the original (+/- ???). The blades are protected with oil, most likely mineral oil and probably should be cleaned first with isopropyl or ethyl alcohol. This is a negative, since it means the blade will most likely rust if not re-oiled before next use.

Buen producto

I ordered these based on the package dimension information (1-1/2" x 3/4"), intending to get spares for my Alto's model 45 mat cutter. Measuring the actual size of the blades I found them to be 0.745x1.51. Too long for the Alto's holder. The width is acceptable due to sharpening and burnishing variations. The length can be made to work by grinding a bit off the holder's keeper corner. You can try jamming into the holder, but it will skew the blade for the cut. Still, being that Alto's seems no longer to be selling their product, the package is a good deal for spare blades, assuming you can make the minor grinding modification.

Sharp blades.