ladder feet pads caravan bbq aluminium floor stands jack festival seat chair alu

clearing out stuff in my shed that hasn't been used within 5 years.
bought to use under a jack or ladder but has always sat in my stanley toolbox.
Approx. 13mm thick and 123mm square.
the cut out is 3mm deep and 80mm square.

Just the described object in the picture.
Postage is 2-5 days via Other Courier and England only
N.I, highlands, I.O.M etc may be extra so check if unsure.