Clamp pad used to apply pressure to the top of the mouldings, if you use pads that have any cuts or tears in the surface the clamping pressure will not be constant and can also mark the top of the moulding.
It was great to find replacement parts for my new-to-me, yet old underpinner. Not only were the parts what I needed, the customer service was even better. And that's worth a lot today. Thanks.
