Review on Shells® Version Powerful Suction Travel by Eduardo Locke

Great product. I've been looking for something like this for a while. I read the reviews. Some said they were the size of a penny, that's not true. They are 2 3/8 inches in diameter, close enough not to break the micrometer. Be sure to check who they are from. Mine came from Shells. I used them in an unusual application and it worked really well once I figured out how to actually install the suction cup. I used mine (all 4) to hold the toilet paper dispenser, C-fold type, not cyclindar type. I removed the hook and lock nut, installed and put the lock nut in. Anyway, in my application I have a tinted window on the back of my work truck. I cleaned the tinted window with isopropyl alcohol along with the actual suction cups to ensure there was no dirt or grease. Once the alcohol has evaporated, the cups will stop sliding. I slammed the door as hard as I could with the paper towel holder fully loaded. He didn't move. I literally can't get the paper dispenser out the window. Week but welcome to Chicago weather where we've had temperatures ranging from at least 14* to 67*. To install the suction cup, remove the lock nut, remove the hard body and place the suction cup anywhere you want and press it to cause suction, put the hard cap and lock nut back on. No problem. I would buy again and recommend.