May be the ones I've received are different. The whole socket cracked after I try to pry them apart.
And the ridiculous thing is, after the socket has cracked, I am left with just the pin. I hold the two sides of the pin with two pliers and try to pull them apart. They just refuse to separate... I am not a super strong muscular guy but I am still almost 6-2 and not THAT weak...
I don't know what to do now. I broke two and I still have two left. I feel unethical to "borrow" a drill for one time use for this, but on the other hand I don't think I have a choice, since Tom doesn't have the time to drill it for me before he sent it out because he has such a lot of order to handle.