its the gear right behind the chuck has some sort of clutch on it I think its call a bull gearLike Diane ask what gear do you need. I have some clausing gears for the apron and the reverse gears. I can check if I know what your looking for. I have found the 100 series gear mostly is DIY gears or eBay clausing don't have a lot to pick from. There is guy on here or used to be that had access to a warehouse full of old machine parts. I think his name was Dave or David?
Good luck.
CH