Get a park tools mini chain tool thing(i take it you mean a chain splitter/tool thing)
Its very strong and will do you. Ive used it to split 8 speed chains and 1/8th chains no problem, and alot of other people use it aswell.
This is it here
There are other ones just as good that are cheaper, but i went for that one, it was abit cheaper when i got it though.