The Concealed Blade Safety Knife has a protected blade channel design that allows for continuous blade exposure with for demanding, repetitive cutting jobs. A built-in stainless steel tape slitter adds functionality and helps increase blade life. Easy, tool-free blade adjustment and change. Ideal for cutting shrink wrap, plastic strapping, stretch wrap, plastic sheeting, leather, nylon, belting, sacks, bags, tape slitting. Fits the 4-Position Safety Blade.