I have paid full price for the Fiskars brand replacement blades. Forget them. I have held off writing a review on these blades until I have really made use of them. With any other new blades I have used when cutting through multiple layers of fabric you have to be able to apply a bit of force. Last night I cut through 4 layers as if they were one layer with very little added pressure needed. My thought was "Whoa! I better watch my finger tips." For as long as this quality is available, these will be the blades I will buy. Thank You!