Had just bought a 12oz coffee at 7-11 and put it in my cup holder When I made a stop the cup holder, coffee, wallet and phone took a dump down on my passenger car mat. Knew it wasn't that stable but waited too long to screw the cup holder to the trany tunnel. Couple of screw could have saved me a lot of clean up and cursing. I like this cup holder because I have somewhere to put my phone and wallet.