The OLFA SK-4 Semi-Automatic Self-Retracting Safety Knife is ideal for those looking for precision cutting with superior safety features. The blade is spring-activated and retracts when lifted from the cutting surface, minimizing accidents and unwanted cuts. The powerful stainless-steel spring ensures blade tension on every cut. 

SEMI-AUTOMATIC BLADE RETRACTION
• Spring-activated blade retracts when lifted from cutting surface
• Powerful stainless-steel spring ensures blade tension

UNMATCHED SHARPNESS
• Exclusive Dual-Edge Safety Blade delivers volume cutting with lasting blade edge retention
• Stainless-steel channel securely maintains blade during use

COMFORT IN YOUR HANDS
• Durable ABS handle
• Textured design provides comfortable, non-slip grip
• Simple blade flip allows for right- or left-handed use
• Large end-loop for easy grip or tool tethering

Replacement Blades Available: HDS# 329542 Olfa® Replacement Blades - Dual Edge