This Irwin 2084400 is a 100-pack of high-performance Bi-Metal Utility Blades.

• Bi-Metal Technology: Unlike standard carbon steel blades that are hardened throughout (making them brittle and prone to snapping under stress), these feature a bi-metal construction. They have a high-speed steel cutting edge bonded to a spring-steel back. This allows the blade to remain incredibly sharp while being flexible enough to bend without shattering, significantly increasing both safety and longevity on the job site.

• Efficiency: Buying in a 100-pack is the standard for professional crews. These blades hold their edge up to three times longer than traditional blades, which reduces the frequency of blade changes during heavy-duty cutting tasks like drywall, roofing, or thick vinyl flooring.

• Safety & Reliability: Because they are designed to resist breakage, they are the preferred choice for tasks requiring more force or lateral pressure where a standard brittle blade might snap.