OTF Scalpel Knife: Precision Automatic Utility Knife for EDC And Professional Applications OTF scalpel knives combine precision cutting performance with automatic out-the-front deployment and compact portability. Designed for everyday carry, hobby work, utility tasks, and professional applications, OTF scalpel knives feature replaceable scalpel blades, lightweight construction, and fast one-handed operation. Popular among EDC users, hardware professionals, and outdoor enthusiasts, these precision utility knives offer excellent control, modern mechanical design, and convenient blade replacement for detailed cutting and daily utility use.