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2-Pack Box Cutter, 2-Color Retractable Utility Knife, 12 SK2 Blades

Constructed with a rugged aluminum alloy shell and a full-metal handle, this heavy duty utility knife is engineered for frequent retractable utility knife use and has passed a 1.5-meter drop test. The ultra-sharp SK2 high-carbon steel blades feature a dual-hardness design with blackened treatment, making them 5 times more durable and 5 times sharper than standard blades, and anti-rust treatment ensures long-lasting edge retention even when cutting tough materials like cardboard, rope, plastic, vinyl, leather, foam boards, and more.
The retractable blade mechanism includes a secure slide lock to prevent accidental slips or retraction, giving you full control over cutting depth for improved safety. The blade system features a 3-level adjustable cutting depth of 0.4 inch, 0.55 inch, and 0.8 inch, allowing precise control for shallow scoring, general-purpose cutting, and heavy-duty applications such as carpet, vinyl, and thick packaging materials. When the blade becomes dull, the intuitive quick-release button allows you to replace it in secondsno screwdriver or extra tools required.