I did not realize that it was some sorta “speedblade.” Think of a switch blade. Some sort of spring-loading mechanism. Interesting. The “spine” has a protrusion you simply pull with your finger. When you pull down on the thing, the blade flicks out lightning-quick.
My SO asked me, “what is that clicking noise I have been hearing all day…?.” Well, I have been playing – opening the blade – all day. Well, not all day. Just enough to annoy perhaps.
Tanto Blade. History of that too. Interesting.