Winding window locks in Melb NE?

Hi. I want to put winding window locks on two windows in my son's room, as he's now at the age where he can jump out of his cot and climb out the window.

However, bunnings only have the type that open on the left side. The two windows in question are hinged on the side, and I'm putting the locks on the bottom, so I need one with the chain coming out the left side and one that comes out on the right side. (I hope that makes sense!)

So, do you know of any shops on Melbourne inner east or north that supply winding window locks?