This extra heavy-duty knife features an all-over rubber grip for professional comfort and control. An acetone resistant, elastomeric handle with a poly-acetate blade-lock makes it an official acetone resistant cutter. It features an automatic blade lock and a heavy-gauge stainless steel blade channel that holds blade tight. Snap-off 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.