STANLEYS4004 Black/Yellow Vacuum Suction Cup - Heavy-Duty (200 lb Weight Support Limit), 4 Pack

I bought these to hang a clothes line or tarp from a camper. These are plenty strong for that. The first test went very well. And these were a little cheaper than the ones marketed for RVs. I like them.

Tents made specifically for our T@G Teardrop trailer we too expensive, so we bought an SUV tent instead. It was a pretty good fit, but we needed a way to tighten up the SUV opening around our trailer. We bought 1 of these to test it out, and if it didn't work, it would go back.I tested the suction by leaving it on the side of my trailer for about 3 days in the heat. The suction stayed on and held strong when I tried to pull it off after the 3rd day.On our latest camping trip, we used this suction cup to hold down one of the areas of our tent that was always loose. It held our tent strap down strong for 3 days/nights in the Redwoods in N. California. It was in cooler weather, so it shows that it will hold strong in both hot and cool weather.I didn't test it with 200 lbs of strain, but it was definitely strong enough for what we needed it for. We're 100% satisfied with this and have already put in an order for 2 more. We figure we can use it to tighten up our tent to our trailer in more areas.

They suck. I use these to attach a PVC pipe to the window of my RV for a cell phone booster. First time I put them up they didn’t stay very long so I added a little spit and they stayed up for a week before I took them down.

Used these to hang my surround sound speakers on a mirror wall. Super sturdy, larger than I thought. Easy to take down and out up.

They don’t stick well against metal. The section only last a short time and then comes off.

I have a 5 ft round Christmas wreath that I hang on the front window of my house. I purchased other, cheaper suction cups that would ultimately fail. This cup latched onto my window well and did not fail. Well, it failed at first because I did not follow the directions and clean the window before applying. It was somewhat difficult to remove after Christmas. That's good! Otherwise, this thing held on like a champ! The attached photos show the wreath with 2 cheaper, plastic suction cups. They failed often. I don't have a photo of the wreath with this suction cup. But It worked perfectly.

These suction cups are great. Lots of holding power and very versatile. I have yet to have one unstick whether driving or any other application.

I was surprised when this product arrive and found out that it was only one. Pictures are misleading since they show two.