When I google this tool, the only hit I get is one on the snap-on catalog site, with the same part number, but no picture of it. The description says it is an ("S" Key Knocker"), but has no picture of it. My question is this: Is the buisness end of it in tack, or out of shape? When I picked it up yesterday, I was sure this was a deformed punch, but now know better. I would just like to see a picture of another example, to see if it is in original condition, as far as the curly cue end goes? Any additional info., or photo's would be much appreciated!

Thanks,

Wayne

From railroadforums.com   June 2011
Might be a clue here;

New guy here checking out everything. My brother in law and his son were just hired by a company that maintains the rail cars down in Tacoma. I am sure many on here are familiar with the company. He is looking for a
SnapOn / Blue Point tool part # CK700MK S KEY KNOCKER for banging out the cottor pins on the rail cars and is around 24" long. You can contact me if you have one for sale.


Thank you
Nathan
253_691_8760

Also called a cotter pin puller???

Thanks kxxr, that is just what I needed to confirm the end on mine is normal. And, yes Lewill2, I see it is in fact for pulling cotter pins, so I have no idea where the "S" Knocker name comes from.

Wayne