These are vintage Pitcher Pump - old store stock - Clayton Mark No.702 - "Universal" "Cup Leathers". Made in USA. Inside hole is 2 1/2", Outside measurement 3 3/8". I'm thinking these will be for a 3 1/2" pump, when wet, and the leather expands. 3/4" tall - $10.00 each obo. I have 7 of them. Contact John at 41zero 4twotwo 01five7