I love those little devils, pipe tools in the pocket knife configuration. However, I am so impressed with, and devoted to the pure simplicity of the pipe nail and horseshoe nail as two ended pipe tools that handily serve as tamper, scoop and to some degree pick, that that is mostly what I use. I have the usual Czech tools, and am forever tempted by these pocket knife like tools, but to have it all in one small tool, for 92 cents, and pleasingly designed as well -- I have never been able to overcome that pleasant device. That said, I have a real weakness for pocket knives. I try hard not to collect them, but I accumulate them anyway.