Running change, or center plastic adaptor not needed anymore?
I thought it was an Axial spur gear for a moment, because they have spur gears like that with larger holes, then use a center plastic piece to line everything up on the top shaft.
oh this is from the transmission. there is no adapter with it. wanted to post this so people can be aware. it's for an HPI Savage and I'm going to try and order from someone else.