I do a few house using pole and unger clamp ,but there not very strong .If you tighten them up to much
the plastic on top of the thread splits where the cut out is. The first one only lasted a couple of days.I have come over this by using a soldering iron and filling the gap with melted plastic as shown in the pic ,wouldnt be without one
sorry couldnt find how to put a photo on ,if anybody couldlet me know thanks