🔄 Auto Reload System – This box knife features a top quick-change button to swap dull blades instantly. After removal, slide the blade control back and forward to auto-load a new blade for fast, uninterrupted cutting ⚙️ 10 Blade Storage – This retractable knife includes a built-in storage chamber preloaded with 10 premium SK5 blades, making blade replacements quick, simple, and always within reach for nonstop work efficiency ✅ Built for Heavy-Duty Cutting – A razor blade utility knife designed for demanding jobs. This heavy duty box opener easily handles cardboard, drywall, carpet, vinyl, and more ✋ Comfortable Grip & Depth Control – This retractable cutter comes with a non-slip rubber handle and a 3-step blade slider for adjustable depth and controlled, accurate cuts as a package opener cutter 💪 Professional Everyday Tool – A retractable box cutter trusted by contractors, movers, and warehouse teams for fast, clean, reliable cutting on all heavy-duty materials The Heavy Duty Box Cutter Retractable Utility Knife is built for professionals who need reliability, strength, and speed. Designed for everyday jobsite performance, this heavy duty utility knife features a durable 6.9″ metal body and a non-slip rubber handle for a confident grip and precise control. Whether you’re cutting cardboard, drywall, vinyl, roofing, carpet, or plastic, this box cutter knife delivers clean results every time. A convenient quick change button lets you swap blades instantly, while the auto reload system keeps you cutting without interruption. Inside the handle, a built-in blade compartment comes preloaded with 10 SK5 blades, ready to deploy automatically when needed. It’s compatible with all standard utility blades and box blades, so refills are easy and affordable. The 3-step retractable blade slider adjusts depth for light or heavy-duty tasks—perfect for packaging, construction, warehouse, and DIY use. Use it as a retractable box cutter, box opener, or razor knife for unboxing, trimming, and general cutting projects. This utility knife retractable heavy duty design outperforms ordinary cutters and is trusted by contractors, movers, and hobbyists alike. When you need the best utility knife that combines toughness, comfort, and precision, this heavy duty box cutter is your ultimate everyday cutting tool.