Cost effectiveness must be thought through. This is a Snap On tool, which can be traded in a jillion times at any snap on truck when you see so much as a blemish on it. As famous as they are for 200. 00 ratchets, their barring tool, which is the best I've used and I've used them all, is very reasonably priced. And it's 3/8 drive. Try using a 1/2 inch drive one on a first gen truck. Plus, you can remove one of the sleeves and change the depth on the tool if it's in a different application. All their Diesel stuff is top notch. I'd buy it all from MAC if I could, but MAC is not making it. MAC will get you a KD, which is the Cummins one. Find KD tools, and you'll probably find it cheaper than Cummins. As far as tools go, there is no room for junk tools. I don't value the KD. I tossed mine out from my Cummins tool kit in the truck and replaced it with yet another Snap On. Timing the engine of the racer at the Muncie event in the field, my snap on barring tool showed it's true value.