M1/M14 Tools

I have three tools: bottom is the M10 Combo tool for the M1, middle tool I believe, is a similar combo tool for the M14, what is the top tool? Also, what’s the proper nomenclature for the M14 combo (middle) tool?

Where did you get the top tool? Is the flat end the correct size to fit the barrel band screw on a M1 Carbine?

That top, flat tool came in my M1 cleaning kit, maybe it’s was a bonus tool.