I bought the craftsman 3 notch utility knife blade 5 pack from sears to go with the craftsman utility knife I bought. the craftsman blades are of good quality and a good price. I will buy more when I need them.
I bought because I needed blades with holes shown in photo to work in an old razor knife I like. Blades arrived without any holes in center. Only had 3 standard notches at top. I can't use it.