THESE ARE THE NEWER ONES,
the older one i ordered before these had a spring in, for a month or 2 they are ok, you dont realise how stubborn they can be to get off if you dont regularally change brushes, i will be needing a softer brush for the leaded windows, the cheap diy lead they put on can be proned to loosen if your brush is too hard.
need a soft brush to show the house owner , putting them at ease.
but atm is not so easy with the quik loq just to change brush head only. need to change the whole top fitting.
which is easy enough with the new clx range, loosen locking bracket pull out, push different brush fitting in.