Swath, I think they have 385-SH on the side. They are all metal, no plastic. With the motor disconnected I spun the gears and they kept going and going and going....you get the idea.
The only thing I can say negative about them, and its not much, is that the motor shaft should be longer. The pinion gear is moved out as far as you dare and it still only contacts the other gear with about 60% of its width. Thats with motor shaft only about 50% thru the pinion. The stock, white caped motors, have longer shafts which are just right,but I was told the others are better motors so I went with them.