Application area: If you are looking for a sophisticated utility knife with adjustable blade extension, the Argentax Cuttex 18 mm with a wide styrofoam blade is an excellent choice. Like its narrower "brother," the Argentax Cuttex 9 mm, it fits comfortably in your hand. You can use it to cut not only cardboard, paper, or cardboard but also adhesive and other tapes. The flexible blade can be changed easily.