Irwin (928) 2086403 IRWIN 18-mm Bi-Metal Snap Utility Knife Blades, 3/Pk (2086403)

Irwin® Utility Blade, Snap-Off, 4-1/4 in Blade Length, 18 mm Blade Width, 0.02 in Thickness, 8 Points, (3 per pack). Bi-metal for longer lasting edge, snaps cleanly with soft snapping action. Bi-metal snap blades are produced through a patented process of combining two types of metal, spring steel and high speed steel. Spring steel allows the blade to bend without accidentally breaking. It also ensures that the blade snaps cleanly on the score every time. High speed steel delivers a hardened cutting edge that stays sharp 3x longer than traditional carbon blades.