Size is right for a standard suction cup mount, and once attached it will not fall off

this 70mm console attachment disk sticks on your dashboard very well and its exactly perfect size for Garmin GPS devices

It's apparently not the right size, which is my bad, so I ordered another one of a larger size

So far it's working beautifully, and it's the perfect size

The 70mm disk was the right size for the suction mount for our Garmin

Perfect size for the Garmin suction cup.

I ordered the wrong size

Sticks where others wouldn't and is a better size too..