LENOX Gold Utility Knife Blades, 50 Pack, 20351GOLD50D

Titanium edge for maximum blade life High speed steel edge retains sharpness longer than standard utility blades Patented bi-metal construction allows shatterproof blades to bend and flex without breaking Four-notch design allows blade to extend further for deeper cuts in drywall, insulation, flooring, roofing, and more Fits all standard utility knives