those cable hangers suck
back when I did use em tho I'd grab the cable with needle nose pliers to pull em thru

get these instead
http://www.jensonusa.com/!!9bjXHlq-y...FcSBfgodeXUAJQ

they won't fracture like the cnc-ed triangle ones do when they get old, plus the open hook design is useful for quick releasing


p.s.
i hope your own brakes have the straddle wire set shallower than the photo, cause those look adjusted pretty weak