AccEncyc 6 Pcs Strong Thickened Sucker Suction Cup Clear PVC Sucker Pads with M6 x 14 Thread Screw Extra Strong Adhesive Glass Suction Holder, Black

We got these to upgrade an inflatable which attaches to glass... we also used a pair to upgrade a sunshade. Both applications worked amazingly well! The suction cups are very thick and strong, the threaded posts made it easy to attach through an existing grommet or through fabric. These are high quality and stick to glass with great strength.

Strongest suction cups I’ve ever bought. Placed them on windshield for emergency lights had to re adjust and they stuck right back on. You have to clean your window first it’s a must for the best adhesion

I purchased these to hang wreaths on the front of glass door and to attach a cat bed to a window. These work better than any other suction cup I've ever tried to use. They last a long time and don't turn yellow in the sun.

I used these in place of those stupid "No-nail" adhesive stickers. They work really well for quite some time, but unfortunately, I keep having to re-adhere them to the surface from time to time. Not the end of the world, but I do wish I didn't have to do that. Other than that, they're heavy duty as advertised, very thick material, and feel pretty sturdy.

I used these to hold up some Halloween decorations outside. Changing temperatures (New England in autumn!) and various levels of wind had no impact on these. They were awesome, held the decorations exactly where I wanted them, were easy to install, and were discrete enough to not be visible over the decorations they held up!

I have an old hand operated meat slicer from the 1950's. and it's rubber suction cup feet had hardened and cracked. When I turn the hand crank to rotate the slicing blade, the whole slicer would slide all over the countertop. I used these suction cups to replace the feet on the slicer. I had to tap out the holes where the old feet were mounted, but the new suction cups use a widely available 6mm x 1.0 thread, so it was easy to find a thread tap that worked perfectly.Now with these new suction cups installed, the slicer works like it used to over half a century ago. When i place it on the counter, it sticks itself in place and holds securely. It would have been a bit nicer if there was an easy way to get the suction to release, but I didn't think to look for that feature when I bought these. Overall, while it's a bit hard to get my slicer to let go of the counter, it stays where I put it while I'm using it, and that was what I wanted from these suction cups.For what I am doing with them, I don't need the suction cups to hold for long term attachment, as I might if I tried to use them to mount a shower shelf. I can't say how well that would work. But for short term usage - like an hour - they hold very strongly. Overall, they are exactly what I needed.

According to the information on them, it says they can hold up to 30 lb of weight. It doesn't say whether that's individually or as a group of six, even as a group of six. That's 5 lb a piece. I was hanging a 32-in light bar in my rear window. Weighs just under 5 lb. Fell within 5 minutes. Was really disappointed. Wrote a review saying that they were junk. Change the light bar to the bottom of the window so it has a little bit of other support and it made it through my entire 3-hour route for our route with only one cup coming undone that was this morning. I don't know if I'm going out there. Find all of them undone and it laying in the trunk area or what? I haven't been out there yet so for now they look like they might survive. I might keep them. If it's laying back there then there's a good chance I'll be returning them because they won't hold the weight that they even say they will cuz four of them holding a 5 lb bar is a pound and a quarter a piece when they're supposed to be able to hold 30 pounds either as a group of six or individually but even then a group of four should be able to handle 20. If it's the whole set. Will update later accordinglyUpdate. They held fine until day two. Very first bump. I hit leaving the parking lot. My light bar fell on the cargo bay floor light bar not wired yet. Wanted to test it first before deciding on that mounting position and that mounting setup most likely returning the suction cups or finding another use for them

Great Suction cups. Stainless steel hardware is a plus.Only downside is they are expensive.