Q: Apple Pencil Adapter

Greetings--

I have a question.

I keep all my Apple boxes (i.e., the glorious boxes that new Apple products come in). I purchased an iPad Pro, Pencil, and Keyboard on launch day. However, I am unable to locate my Pencil box. It had my Apple Pencil Adapter and the replacement tip in it still, as I figured I'd lose them if I removed them from the box.

Anyway, is there a way I can purchase a replacement adapter? I have seen others, but I like Apple's the most. I cannot find it on their website.

Thank you!