1-3/4" Medium Suction Cups with Studs and Knurled Nuts - 25 pack

Excellent and very strong quality. Just what I needed to hold my LED lights onto the interior wind shield of my duty vehicle. South florida heat inside vehicle when parked does not interfere with the suction cups hold. I will update review in a couple months.

Reliable especially if moisture is underneath

What I wanted

I have three folding Powerfilm solar panels that I use to charge my second battery in my FJ, & to assist running my ARB fridge. I was having problems finding a practical way to mount these over the windshield & hood to hold them in place without the wind flapping them all over the place. These really held the panels in place on the FJ and also on my teardrop camper when I needed to charge the battery - and no scratching like when I tried to use clips to hold the panels down!Great product! Thanks very much!!

You might want to grind off the point of the studs so they don't poke through when you screw them in. Otherwise, great!

I'm actually quite disappointed with this product. It arrived with the screw shank, brass nut and suction cup all separate. I was hoping the shank would have been moulded together with the screw shank, but it pulls away from the cup too easily and is not fit for my purpose.

Tried to use them to hold a small solar panel up against the windshield of my truck. They did not last, fell apart after a few weeks. Completely disappointed. Maybe others have had better luck than me.

I ordered many suction cups for my window covers. This is "the ultimate solution" to make sure the don't fall out. Studs are a bit long for fabric applications, but easily fixed by cutting them or adding a cap nut.