The RAM-202PSAU is a 3M 2.43 inch diameter double adhesive mounting pad.
This adhesive disk is designed for the RAM Mounts 2.5 inch base plates (RAM-B-202, RAP-B-202U, RAM-202U) and replacement pad for the RAP-SB-178, RAP-SB-180 series of products. This pad is designed to adhere to flat clean surfaces.