Good used gear specifically removed from a 1HP IHC Aircooled Tom Thumb engine. I believe it’ll fit the 1HP hopper cooled famous/titan engines. Gear shows some wear and it’s age but I’m sure it still has many years of life left in it! I do not have the pin that holds it to the crank. Please see all pictures for the absolute best description. Keep in mind this part is over 100 years old.