A Swiss Army knife (SAK), (French: Couteau suisse, German: Schweizer Offiziersmesser, Italian: Coltellino svizzero) is a brand of multi-function pocket knife or multi-tool. It originated in Ibach Schwyz, Switzerland in 1897. The term "Swiss Army knife" is a registered trademark owned by Wenger S.A. and Victorinox A.G., longtime suppliers of knives to the Swiss Armed Forces. Generally speaking, a Swiss Army knife has a blade as well as various tools, such as screwdrivers and can openers. These attachments are stowed inside the handle of the knife through a pivot point mechanism. The handle is usually red, and features a Cross and Shield, the coat of arms of Switzerland.
http://en.wikipedia.org/wiki/Swiss_Army_knifeIn this instructable I'll tell you how to sharpen, clean, oil, etc, your swiss kinife. Heres My swiss knife
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Devrian