I don't believe these to be actually sanwa parts. They are reproductions for some reason. They are wickedly difficult to remove compared to the original. I don't know why that is but the tolerances on it must be ever so slightly off. They do not come with the logos as show in picture. I removed the inserts and put back into my original gate. The inserts are not molded but 3d printed.
They do however snap in and work. Removing them compared to the original factory gate however is extremely difficult. I don't know where you would actually buy original parts of these.