WORKPRO Premium Utility Knife Retractable Snap-off Blade, Heavy Duty Aluminum Box Cutter Set, Razor Knife Exacto Craft Knives, with 10 Extra 9mm Blades, Pack of 5

Heavy-Duty & Lightweight Utility Knife : Aluminum alloy and stainless steel design with rust-free powder-coat makes the box cutter durable and lightweight (0.7 oz), passing the 1.5m drop test. SK5 razor blades through 1922 °F heat treatment are up to 64 HRC. For long-lasting, extremely durable cuts and slices on boxes, plastic packaging, and straps.