OLFA SK-4 Self-Retracting Safety Knife and Replacement Blades 50Pack

Self-retracting safety knife features a revolutionary heavy-duty spring-activated blade that automatically retracts the instant it loses contact with the cutting surface, reducing workplace injuries. Includes a slip-resistant ergonomic handle and stainless steel blade channel that holds the blade tight. Has a 3/4" cutting depth. Ideal for cutting corrugate, shrink wrap, plastic strapping, rubber, leather, flashing and more. Self-retracting safety knife is for right or left handed use. Uses Olfa SKB Trapezoid blades 9612(5/pk), 9613(10/pk), 9614(50/pk) sold separately.