Of course, I have measured it BEFORE. Although here are only given as a maximum plate size of 150mm, but it's rubber, so I wanted to try it. Actually, this part has also the right size, but a little lacking in the depth and the inner edge is a little cumbersome. Just as the building is this rubber pad fits really well on the circular plates on most lifts in a car jack of plate is but domed and usually has "teeth", the top margin is therefore not continuous. For this curvature and the teeth here unfortunately little space is offered.
But as I said: yes is made of rubber. Since rubber is not exactly highly elastic in this strength wandered the whole rubber pad only times for 5 minutes in a saucepan with water. Thus, the rubber was much softer. On the kitchen table, I then squeezed the dish from the car jack in the rubber pad. And I've done by a shoehorn, a normal spoon, it should do well. Screwdriver I would not recommend because the edges can cause the rubber damage.
With a little persuasion of rubber but went over the plate. By the teeth of the plate is not completely flat, but that's the underbody of the vehicle also not. Anyway, now no longer scrape metal on metal and I will certainly use the car jack 20 more years.
Who should be considered part of this to necessarily buy only times remeasure, because there is this rubber pads in many sizes, then you have to accept any half-hearted solutions in purchasing.
If the part is now a little more depth, then it would be perfect for me. But it has been well developed primarily for lifts and the naming of Rangierwagenhebern should probably further attract customers. So there is of me only 4 stars.
