Review on Super-Adhesive X-Large Cable Tie Mounts 100 Pack – Fast, Frustration-Free Wire Management with Tools-Free Sticky Backs or Permanent Screw-Holes by Sheppard Priest

I used these to attach a 1/2" PVC pipe to a painted iron frame so I didn't have to drill it. Within 15 hours the plastic washers came loose leaving a sticky disc on the frame (so I know I had a good grip on my end). I placed them about 2 feet apart so they didn't have to carry much weight. Absolutely useless. I've tried several 3/4" spacers and thought they were just too small. It's not 3M glue so I'll try replacing the glue on the pair with a good quality 3M glue tomorrow and see if that works.