These Trapezoid safety knife blades combine the toughness of a traditional trapezoid blade with extra safety by reducing the risk of accidental puncture wounds due to their snub-nose design. These Trapezoid safety knife replacement blades will fit all the most popular knives that use the two notch blades. * Shatterproof: * Spring steel backing combined with dual hardening of the blade makes the blade durable * High speed steel edge stays sharper up to 3 times longer * Reduce the risk of accidental direct puncture wounds * Perpendicular blade junction gives excellent blade penetration * Two notch blade design fits most utility knives * Great for cutting dry lining, insulation, flooring, roofing and more * Suitable for most applications * Supplied in packs of 5 https://elecena.pl/product/27222023/irwin-10505823-bi-metal-blue-safety-trapezoid-blades-pack-of-5 2024-11-11 https://elecena.pl/product/27222023/irwin-10505823-bi-metal-blue-safety-trapezoid-blades-pack-of-5 2026-05-03 https://elecena.pl/product/27222023/irwin-10505823-bi-metal-blue-safety-trapezoid-blades-pack-of-5 2026-06-17 https://elecena.pl/product/27222023/irwin-10505823-bi-metal-blue-safety-trapezoid-blades-pack-of-5 2026-07-10 https://elecena.pl/product/27222023/irwin-10505823-bi-metal-blue-safety-trapezoid-blades-pack-of-5 2026-08-26 https://elecena.pl/product/27222023/irwin-10505823-bi-metal-blue-safety-trapezoid-blades-pack-of-5 2026-09-18