Here is an original crankshaft gear for a 1hp IHC Famous or Titan, or Tom Thumb. It is still on part of the crankshaft which will need to be removed before use. Check out the pictures and see if you need it. For questions 419 789 1159. About 1-7/8 in diameter. 5/8 wide at the teeth. 1 total width, not counting crankshaft part. Thanks for looking at this listing! If you want to check out my reputation and such please feel free to google search my name. My name and address is. 14316 State Route 281. If you can find a way to talk to me with your voice you will almost always get a quick response. If you message me please try not to sound like a caveman. I have terrible grammar myself so I understand but sometimes it is very difficult to comprehend what some people write. If I make a mistake on my measurements or you feel something is not as described please let me know and I will try to make it right. I think most all of my customers with a normal level of sanity are happy. I think most people would agree that I do an extremely good job of packing items so I guess it’s worth the wait. Check out my other items. Be sure to add me to your favorites list.