Utility knives are pretty much ubiquitous, but snap-off blade knives don’t require taking apart the knife to get a sharp edge. Irwin is looking to take this advantage of snap-off blades and use it in utility knives with their new 4-point carbon blades.
Irwin’s holding the info for these new blades pretty tight to their chest for now. All they say is you can snap the blades on the score to get a new sharp tip, and that the blades have four notches instead of the usual two, so you can have a fully extended blade after you’ve snapped off the dull one — although this pretty much eliminates the snap-off advantage if you have to take the knife apart.
Looks like you can grab a five packages of five blades (25 blades) for around $10 before shipping charges.