Full size retractable ceramic box cutter is not only capable of cutting the largest of boxes, it can also retract the blade for easy storage. Allows you to open boxes with ease. Finger loop for added control. Ambidextrous finger slide for top and side use. Perfect for home or office. Knife Type: Safety Cutter; Blade Type: Retractable; Blade Material: Ceramic; Number of Blades: 1.