I already have 3 of these that I purchased from elsewhere about 6 years ago. I wanted more & was amazed to find the exact same ones on this suppliers website. Purchasing was as they say "a no brainer" Great quality as I know they last, tried & tested.
As before I wanted them in Black but that was soon remedied with a special paint made for plastic.
Comments about slipping down the pipe is easily sorted. Get 1 or 2 large zip style cable ties & attach them to the pipe as tight as you can. Cut off the excess. Hang your planter above these for support, just as you would above a pipe bracket, if one is in the right place.
Who knows if they are still around in the future, I may need more.