This sale is for these two scarce greasers or oilers, I believe were used on the old hit & miss type engines. There is an older cast iron unit embossed H.K Stahl I Pat'd Mar 24 96  MPL 6. This one has 7 /16" threads The other unit is stamped Hunter Pressed steel co 00 air spring and has smaller threads that look aprox 5 /16"  The condition looks very good with light signs of wear and use .   Add these unique items to your collection