Part Identification

Need a little help … it looks like a shaft coupler, but it isn’t round. It is the shape of the HS shafts that allows you to insert a normal shaft. Any idea what part number this is? Possible old part?
IMG_1276.JPG

Is that the insert for the 12 tooth pinion?

This part goes inside the high strength 12 tooth metal gears that will only fit with high strength axles without them.

Goes into the picture attached.
12 tooth.jpg

I believe it is the metal high strength gear insert 276-2251 (I don’t think you can purchase it separately?) https://www.vexrobotics.com/gears.html

Thanks. We had a few laying around and I didn’t know where they came from … and I want to buy more. :slight_smile:

It definitely is. I also wanted to make sure that the team was using a legal part as well.