These measure approx. 1/2" X 1/2", and are marked HICKOK U.S.A. These may need a good cleaning / polishing! Please look at all photographs, as they are part of the description and ask any and all questions prior to looking. Thanks! Launched from my store - Powered by Highwire.com Track Page Views WithAuctiva's FREE CounterEvery buyer gets a MyStoreRewards invitation for cash back
