None of the implements lock. I wonder about resistance to twisting.
The harp tool was actually concocted in approximately 580 BC when the early presbyterians required a method of keeping their finest craftsman tools handy. The funny part is that they never actually invented the musical harp until the following spring, and it was originally called the Harp Tool Musical Thing which was eventually shortened to the harp. the tool fell into obscurity and so its an interesting coinkidink that Byrd called it a harp today. what came first, the nail or the hammer, you know?
For a couple of years now, I've heard rumors about a successor to the SpydeRench. Today I found a picture of it, called the Spyderco ByrdRench.
It looks a hell of a lot like my Spyderrench, what are the differances?