For a small PSK, I'd think the best bet is still the razor blade. It's small and flat and can be used for most critical survival tasks (shaving tinder, cutting thread/cord, etc.). <br><br>Hmm...<br><br>Are there razor blades longer than the inch and a half scaper blades? A longer blade would be easier to use and would not take up much room.<br><br>Also, can thses blades be sharpened? At home, I just toss them when they wear down. But in the wild you may not have that option.<br>