Universal knife 18mm, meth. a guide layer. case BM.4617 is the perfect tool for cutting cardboard and other rigid materials! Plastic case resistant to mechanical damage. Special holes for hanging than in a convenient place. The blade is made of high quality steel and has a reliable locking mechanism that ensures the immobility of the blades during operation. The presence of a metal rail provides added blade durability and accurate movement of the blade even when working with solid surfaces. The knife has a removable plug with a notch for ease of calving segment of the blade on the handle.