Columbia River 5500 K.I.S.S. Pocketknife
When the blade is closed onto its handle/frame, the fit is so close that it basically “seals” the cutting edge to the frame. Therefore, even though it’s exposed the blade remains safe in the hand or pocket.
Columbia River 5510 Classic K.I.S.S. Pocketknife with Serrated Blade
This is the Columbia River 5510 Classic K.I.S.S. Pocketknife measures 3-1/2 inches when closed. K.I.S.S. stands for Keep It Super Simple. When the blade is closed onto its handle/frame, the fit is so close that it basically “seals” the cutting edge to the frame.
Columbia River 5520 Delilah’s P.E.C.K. Pocketknife
The Columbia River 5520 Delilah’s P.E.C.K. Pocketknife measures 2.265 inches when closed. P.E.C.K stands for Precision Engineered Compact Knife. This knife weighs less than one ounce. The blade steel is 3Cr13 with a fine bead blast finish and the frame is stainless steel.