Heavy-Duty Utility Knife: Aluminum alloy design with rust-free powder-coat makes the box cutter durable and lightweight (4.5 oz), passing the 1.5m drop test. Hand-friendly matting body and TPE & ABS ergonomic non-slip handle design upgrade your user experience Retractable Knife: Push to adjust the blade position and lock it while using. 4-position manual retraction is designed for full use of the blade for exact cuts Quick-change Blade: Includes 16 SK2 standard blades (with 5 spares stored inside the knife). Push the blade out completely, press the release button, then pull the blade out. Press again, and put the spare blade in. Change the blade quickly and safely without any tools Portable Pocket Knife: 7.25" x 1.5" x 0.87" size fits safely in your pocket and you can take it anywhere easily! Black matt surface and elegant construction, ideal for gifts Premium Box Cutter: The utility knife is sharp enough with SK2 blades (SK2 razor blades, through 1922 °F heat treatment, reach up to 64 HRC) and can be used for different jobs that you may need to get done. Perfect for work, hobby, DIY, cardboard, carpet, rope, boxes, wallpaper, vinyl, rubber, leather, PVC material, etc ARROW Retractable Utility Knife, Quick-Change Box Cutter with Blade Storage Design, Twine Cutter, Heavy Duty Aluminum Razor Knife with TPE Comfortable Handle, 15 Extra Blades Included