ADJUSTABLE Cutting DEPTH. YOU CHOOSE! Paper, film, foam? Not a problem at all! But wait, there's more! The SECUMAX MOBILEX is the only safety knife with a concealed blade and an adjustable Cutting depth. Make blade access larger or smaller by setting the in-built Cutting depth adjuster. Set a depth ranging from low 2 mm to great 10 mm. It all depends on your requirements and the size of the material you need to cut.