Well i have had my ZL1addons.com lift pad for my challenger about 6 years.
the product goes on the pinch welds and creates a pad area to jack up you car at home or track without doing any damage. It is made out of aluminum and stays on the car do to two magnets in the pad.
i just organized my racing bag to put it away for the winter and noticed that the pad was missing one of the magnets. Emailed them and asked if they could forward to me one to replace it.
They just emailed me and they said that they would send me a new complete pad. never did they ask me when i bought it or anything else . they just volunteered a new unit. This speaks well for the company.

Check out their products at ZL1addons.com.