Whether you're right or left-handed, novice or professional, this tool is designed especially for you. The NA-1 HandSaver Cushion grip handle is designed for maximum control and comfort while you cut, reducing hand fatigue. This auto-lock cutter features a stainless steel blade channel that holds OLFA's Standard Duty Snap-Off Blades - up to 13 cutting segments per blade. It also features an acetone resistant, elastomer handle with a poly-acetate locking mechanism, making it an official acetone resistant cutter. OLFA's handles are so tough, so durable that we guarantee the handle FOREVER!