Originally Posted by onehundred80
These do not tilt as the car is jacked up as the OEM jack pad does. This will put all the weight on one spot of the cars jack point.
Most modern floor jacks have a tilt mechanism built in. The Reverse Logic jack pad rests on the top of my floor jack's circular base, and I use a wide rubber couch skid protector to keep the above-linked device in position on the jack.
It works great for me.