| 摘要 |
An adjustable blade utility knife having a hollow body comprising two hinged body parts, a blade system for extending a double edged blade, and a knurled knob mounted on opposite sides of the body for controlling the blade system with a finger of either hand of an operator. A second embodiment contains serrated edges. The blade may be manufactured using a bi-metal, a refractory hard metal or cemented carbides. A blade storage area is formed inside the body.
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