This heavy-duty knife features an all-over rubber grip for professional comfort and control. An acetone resistant, elastomer handle with a poly-acetate blade-lock makes it an official acetone resistant cutter. It features a ratchet-wheel blade lock and a heavy-gauge stainless steel blade channel that holds blade tight. Blades are made from high quality carbon tool steel are produced using OLFA precise multi-step production process for unparalleled sharpness and superior edge retention. Long lasting, durable snap-off blade - a new sharp edge with each snap. Easy, tool-free blade change for convenience.