CM-871 Overhead...

[Hammerhead]

Thanks, it's not really a dedicated kit, I've just done enough overheads that I know what tools I need so I just popped them out for a pic for an example.

I got the feeler kit from my Snap-On guy.
It is not a Snap-On tool, but something else he carries, and when I saw it I could see the convenience of it.
It is a Lang Tools product, Part # 3079 Feeler Guage Set for Heavy Duty Truck Valve Lash Adjustment
I'm quite sure it could be found online for a better price than from a Snap-On guy, but he had it on the truck that day, so impulse said "You waaaant me Hammer..."
   
It comes with all pictured;
-the long blade 90* (which it says "especially useful with Cummins")
-the short blade 45* (which I prefer for an ISX)
-the second set of short blade 30* are "stepped" 0.002" (which it says is DD spec)
I never check mine, I just adjust everything, but I assume the stepped would be great for checking if someone was into that.