No more dull blades - simple snap the end off to reveal a good-as-new knife This heavy-weight locking snap-off knife is suitable for cutting boards, textiles, wire, some metals, leather, plastic, rubber, vinyl, rope and more. Safe and easy to use, this carbon steel blade has 8 segments that allow dull edges to be snapped-off as needed, revealing a fresh sharp edge. Adjustable blade length Lockable to prevent slippage Refillable