【Heavy-Duty Utility Knife】: This is one of the heavier and more solid feeling utility knives (5.3oz/150g). Good to apply a lot of pressure when cutting, without making your hand sore. 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 【One Hand Quick Open & Safe Lockup】: These folding utility knives are using a firm Axis lock mechanism which can be opened & closed with one hand within a second. And won’t open without pushing the button 【Great for General & Heavy 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 Friendly 】: Hand-friendly matting body and ergonomic design upgrade your user experience. Materials comply with environmental protection, the total content of three o-phenols less than 1000 ppm. Easy to carry with a belt clip Trusted Quality : Manufactured by a globally recognized tool supplier, ensuring consistent performance and reliability WORKPRO Folding Utility Knife with Extra 10 Blades, Blue