string/wire used to hang reflector lights

Does anyone have any recommendations on as to what type of string/wire can i use to hang up a HPS light with reflector? The reflector is meant to be fixed to a wall but i was thinking of just drilling 2 holes on each side and hang it up. there's already 2 holes on one side but i don't think its big enough to have a metal chain go through it.

Don't mean to jack your thread, but I also have the same question so why start another thread.
My Ballast and Reflector are connected together and I have no clue how to hang and balance this thing. Currently its screwed down to a table, the plants are growing rapidly, 10 inches away from the light.

nah its alright. why don't you just attach it to a really light piece of wood or plastic then drill two holes on each side of the board and hang it up that way.