The IRWIN Blue Blade bi-metal utility blades stay sharper 3X longer than traditional IRWIN carbon blades. As the name implies, bi-metal blades are produced through a patented process of combining spring steel and high speed steel, each with its own attributes and benefits, making them virtually shatterproof.
- Features patented bi-metal technology that sets new standards of performance
- Spring steel body delivers superior flexibility to prevent breaking
- High speed steel cutting edge stays sharp longer
- Fits most utility knives
- Includes (2) 50-pack replacement blades
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