Does anybody know where I can buy one of these

That's the first time I've seen that... It looks pretty cool.
I checked and you can order directly from the company that makes it, Rei Tips in Japan.
It costs 12,000 yen, which is about 100 USD.

Not sure if they ship overseas, but you can send a request through the order form here:
http://www.js-billiards.com/rei/order/index.html