Unique Safety 2-in-1 Design Utility Knife : Self-retractable slider and auto-lock slider for both safety cutting and continuous cutting. The multiple locking grooves allow free control of blade length with sharp precision. Razor blade replacement is easy with the quick-release retail. Includes 10 extra blades. Premium Material: A stainless steel track with superior PP makes the box cutter durable and lightweight (1.3 oz), passing the 1.5m drop test. Electrophoretic coated 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. Ergonomic : Soft TPR + Hard ABS, 2 material considering both Comfort and durability for your grip Sharper Acute Angle Great for General & Precision Cutting: Slice through cardboard, carpet, drywall, rope, vinyl, leather, flooring. Use for box cutter tool and exact cuts for arts & crafts or hobby. Makes a Great Gift for the practical people on your list! Human & Environment : Hand-friendly body and ergonomic design upgrade your user experience. Materials comply with environmental protection, all products will be tested for heavy metals and chemicals, the total content of three o-phenols less than 1000 ppm Trusted Quality : Manufactured by a globally recognized tool supplier, ensuring consistent performance and reliability WORKPRO 2-In-1 Safety Utility Knife Retractable Snap-off blade, Heavy Duty Metal Box Cutter Set, Razor Knife Exacto Craft Knives, with 10 Extra 9mm Blades, Pack of 3