Ingco Professional Snap-Off Blade Utility Knife.

Blade Details: Uses 18mm x 100mm SK4 or SK5 high-carbon steel blades. The snap-off design allows you to break off dull segments to immediately reveal a fresh, sharp edge.Locking Mechanism: Equipped with a flat push-button slider that allows for smooth blade deployment and secure locking during use.Ergonomics: Features a durable body— with a textured or soft grip—designed to minimize hand fatigue and provide better control.Included Accessories: The packaging typically includes the knife pre-loaded with one blade, plus a separate container with extra replacement blades