Vintage hit miss engine oiler in very good condition. This oiler I believe is correct for the IHC McCormick Deering 6 horse power model M engines. May possibly be correct for 2 1/2 horse power Moguls and later model Famous engines. The mounting threads are 1/2 inch NPT. The oiler measures about 5 3/4 inches tall. Both top and bottom glass are nice. Has the vent tube and check ball for blowback on cylinder. Please see my other auctions for more hit & miss parts and collectibles.