oh no!
I'm pretty sure they won't let you have that. If you are checking a bag, then put it in there, but don't carry it on. I actually had a problem with toenail clippers. The guy pulled me to side and he asked if I had anything. I said no, he asked again. I said no, and he got pissed, found the toenail clippers, and said " Ah hah! what about these?" He confiscated them.