Well, the OPK ( one piece knives ) were what started the whole CRK company. They were for tactical/combat, hunting, camping, edc, just like you said. They were a solid bar of steel machined into a knife, so no weak points like the typical knives of this type failed from. The blades were made in A2 tool steel and held a great edge. There were runs in 3V and when A2 was unavailable, D2 was used, but neither of these were the norm. Handles were hollow with a screw on cap to store small items. Sheaths were top notch and they made many different blade profiles. There were basically 4 sizes, but there were exceptions with some special models here and there. 9", 7.5", 5.5" 4" were the standard versions with spearpoint blades and clip point blades being the norm. When I first got into CRK many years ago, I bought like 15 OPK before I even tried the sebenza. I used them for everything. Even food prep and they always performed very well. They would serve anyone well for any task where a fixed blade is preferred. For many pics, go to my CRK History Timeline page, you will see pics of many of them that I have owned. They were discontinued a few years ago and prices have shot through the roof, easily doubling, tripling, quad.....etc. There are TONS of posts on them through this forum, just gotta dig deeper than normal as they have been discontinued for several years now. Many are probably in collections now, but I am sure many still use them, like me whole just love using and enjoying the knife. I have sold several OPK over the years, I will not sell any more of them.
Awesome!! Thanks for sharing!! They are all Beautiful!! I think I like the Nine inch on the bottom the best. What may I ask is that called and please excuse my ignorance!!