OLFA CL 18mm snap blade knife is a versatile box cutter designed to cut sign materials, cartons, cardboard, foam board, etc. Utility knife features heavy-duty stainless steel blade channel that holds blade tight, adjustable cutting depth guide, built-in staple remover, and forever-guaranteed handle. Blade adjusts from paper thin to 3/4" depths while the sturdy flat base offers stability and perfect 90-degree finished edges. Ratchet wheel locks securely with one hand. Double-honed blades snap off for super sharp points instantly. Perfect utility knife for cutting all types of material including gator board, foam core, corrugated plastic, and expanded PVC. Uses OLFA 18mm snap blades shown at right.