CONBOLA Suction Cup Hooks Heavy Duty 4 Pieces Car Camping Essentials Upgraded Tie Down Suction Cup Camper Accessories with Securing Hook Strong Power for RV Boat Window Glass Camping Trap.(4 pcs)

I've been camping, road-tripping, and setting up temporary rigs for over a decade, from weekend state park trips to month-long overlanding runs, and I've tried just about every "heavy-duty" suction hook on the market. Most of them either fail in heat, lose grip overnight, or can't handle real tension. These CONBOLA Suction Cups Hooks (Heavy Duty Camper Accessories / Car Camping Essentials) genuinely surprised me. First thing I noticed: the seal. A lot of suction cups claim to be heavy-duty, but they rely on a flimsy lip that curls after a few uses. These actually create a tight vacuum when you press and lock them in. I mounted two on the sides of my SUV to secure a tarp for shade during a hot Texas afternoon, and they held up to 90+ degree heat and steady wind. No slipping. No slow sagging. No midnight collapse. Pro tip from experience: clean the surface first. I wiped the paint down with alcohol before mounting. That extra 30 seconds makes the difference between "works okay" and "rock solid."

These suction cup hooks have proven incredibly useful for my camping and car organization needs. The strong suction holds securely on my SUV's windows and smooth surfaces, easily supporting heavier items like lanterns and gear bags. I particularly like the included securing hook design which adds extra stability. While they work best on non-porous surfaces, they've maintained their grip even during bumpy road trips. The black color option blends well with my vehicle interior. For the price, getting two high-quality hooks is a great value compared to similar products I've tried. A practical solution for outdoor enthusiasts and travelers.

Suction is excellent. The nut holding the bolt in place comes lose and needed to be replaced.

These things work crazy good. I've only tried them once since I bought them and it was hard to get of of the glass.

Fantastic! Stayed stuck for 2 weeks and still going strong! The suction is VERY strong, it takes Hercules to pry them off, and that's a good thing. These are NOT wimpy things that will come loose and fall of in a few minutes like all the others I've tried. I stuck them on the inside of my SUV's windows in the cargo area and attached bungee hooks and cargo netting pulling on them with a LOT of weight, 150 pounds of stuff pulling against them. It was asking a lot of them to hold that much weight & pressure with the straps pulling tightly on a long 2000+ mile week-long road trip. But they held perfectly! What a nice surprise they never came off even once, not loose at all, those babies were stuck and not going anywhere. I have not tried them on other surfaces but for clean glass in your car even with temp changes it holds incredibly strong! UPDATE: They are STILL stuck tight after ONE MONTH! I finally took them off and it was hard to pry them off, as in very hard, but that makes them good. One thing you will want to do is make sure you keep the plastic caps they come with covering the suction cups, as you will need to put them back on over the cups when you take them off whatever they were stuck to. This is because the inside of the cups are sticky with an adhesive type surface and without the covers they would get covered with stuff immediately and that would surely hurt their sticking next time you use them. So keep those caps, they are attached but if you cut them off like I did, make sure you keep them!

These suction cups come with an adhesive on them combined with the suction ability on the lever. If you're not planning on taking them off they are probably great, however my use case was that I need to attach and detach them. They attached great, but were very difficult to remove without tools once they were in place. The adhesive seems like it will eventually wear out and the suction probably won't hold very tight once that happens.

Bought these to have a point to secure a tarp off my car when camping. If there’s any wind gusts (5mph+) these will struggle to stay in place and often times disconnect and go flying into my car. As others have mentioned, these come with adhesive on them initially but if you are someone who needs to disconnect and reconnect them while moving between campsites, this adhesive quickly disappears and you are stuck with very poor suction. These are great for non-windy conditions but if you have any gusts of wind and the tarp somewhat blows around, these quickly disconnect and go flying everywhere (often into your car). I’ve tried cleaning the spot I’m connecting to as well as cleaning the suction cups before connection but they still seem to struggle to keep connection in wind. It’s more of a headache to use these as I find myself always having to reconnect them multiple times as they come flying off. Wouldn’t recommend for campers looking for them to stay on for a few days. These might be good if you want them to stay in place for a few hours in non-windy conditions.

I have ordered these twice. They have great holding power. I used them in the Arizona desert with 40mph winds and they held fast. If they pop off for you try wetting the cup before tightening it. Also be aware to tighten the tiny screw before using because that can actually come off.