Utility Knife Retractable Box Cutter for Cartons, Boxes, and Cardboard 18mm Wide Blade Cutter Great for Warehouse, Office, & Home Use - Red, Green, Yellow. EcoQuality 18mm Retractable Box Cutter for Boxes Steel Sharp Blades ✔ 18 MM High-Grade Carbon Steel Blades Thickened blade ✔ Safety locking design allows locking the blade in position ✔ Pre-cut sections that snap off easily allowing for a sharp blade every time ✔ Easily cut boxes, cardboard, tape, foam board, mat board, and cardstock ★ Utilized by many Households, Warehouses, and Fulfillment centers ★ Easy to carry in your pocket once retracted for safe and easy handling ★ Ergonomically designed handles for a comfortable grip every time ★ Many uses from DIY projects to office and warehouse use! ★ Comes in a beautiful Red, Green, or Yellow Colorway ★ Lightweight and convenient to carry ★ Non Slip Design allows for easy work ★ DURABLE: Stainless Steel Blade and Plastic Housing allow for an easy grip for long-term use!