Made by Squire and is a real heavyweight. Got the word 'hardened' stamped all over it. Here it is and the tools I used.

and the keyway - notice the thick 'hardened' rotating disc in front of the plug.


Looking down the open shackle end I saw and unscrewed an allen key headed bolt. Incidentally, this could be drilled out with a large bit, bypassing all the hardened stuff, and the core would fall out. Here is the core, and even this has 'hardened' plates either side.

Here is the core disassembled....

Notice the puny plug. Well I wasnt fooled so opened it up expecting mushrooms etc and this was what was in it....


Not one!!!! Apart from having six pin stacks there is nothing to fear.
Bring 'em on!
regards