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.

Very sturdy. I purchased these to attach perches off our window and in the shower for our bird. I don’t have to worry he is going to come off the window at all.

Awesome product

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.

Great hold for perfect for my badge window display quality built perfect size for good!

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.

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

Good suction on a flat surface. Mine are for glass. Did not fall off at car windows at 100 degree F conditions.