Heavy Duty Suction Cup with Security Hooks 4Pcs Strong Suction Cups Multipurpose Car Camping Accessories Suction Cup Anchor for Car Awning Boat Camping Trap Tie Down.

They stick to the window and hold things in place.

bought for out door screen for side of rv works great ordered second set liked so much

This product worked very well. I specifically got the for the inside of my pickup cap. Attached to the window allows for better organization. Recommend

Used once on a glass wall. 2 out of three didn’t stick. I think they were used and returned before selling them to me. One had a missing nut to hold the screw in place.Ruined my display at a vending booth because I couldn’t hang my product without it falling down.

I wish I found these years and years ago. So many amazing uses.

Suction is good. They aren't going to break. They're good for a travel trailer.

These are sturdy suction cups but they don't stay on as long as expected. We used them to create a canopy over our van at a recent camping trip. The canopy kept falling off, and we figured a trick to getting them to stay on longer: we moisten the suction area with a damp cloth or a sprinkle of water, and the suction cups lasted much longer.We knew to wipe the surface clean and wipe off any oil or dust before applying the suction. We used these suctions with a canopy and telescope poles. Worked well especially with the hack.They are very easy to use - no brainer really. Flip up the levers to release and push down to lock in place.

We got these to use with our camping gear. My initial thought was to hang our projection screen on the side of the camper using these suction hooks. Unfortunately, they didn't want to stay stuck to the side of the camper (aluminum siding). They do however hold great on our vehicles (both glass and body) and hold tarps great! So we use these for the tarps to create an extra shelter in between vehicles and tents at the campsite now. Very good suction to smooth surfaces. With the tarps connected, the suction cups stay secured to the vehicle with no issues, even with some winds and rain. I will likely be looking into getting a few more sets since it only came with 4 pieces, we can always use more!