Cutter has dual action safety lock, ergonomic handle that reduces hand and wrist fatigue, and self-retracting blade. Features a high quality, tungsten tool steel blade for maximum performance. For left and right hand users. Cuts leather, paper, vinyl, film, wallpaper, multiple layers of fabric, and more. Use Olfa Rotary Replacement Blades: OLFRB45H-1 45mm Endurance, OLFRB452 45mm, or decorative edge blades, each sold separately.