These are the basic Longacre scale set, many years old. These are not the newer "slimline" profile pads but the older, thicker style, still the standard 15x5 pad area. They do work and I have used them quite a bit around the shop, however I have a new set and now really do not need these. There is a single pad that seems to need recalibrating or is having an issue with the connector at the pad, either of which is easily and cheaply corrected. All of the connectors should probably be replaced, but it has not been a big enough issue for me to bother with as yet. Again, cheap and easy fix for someone with more time than I have.
Make me a reasonable offer and come take them away.
Easiest to reach me at don@grid-1.net or at 720-212-5838.