Buy one. They do look cool and they can be used in a pinch. But mostly they look cool haha. I bought mine here. It says 350 but it fits 370 just fine. They come in several colors too. The packaging is awesome and it arrived on time.
http://www.amazon.com/gp/aw/d/B00BF0...&robot_redir=1
Also doin your halos on your own is actually really easy. The toughest part for me was finding a big enough oven. I recomend doing it yourself, nothin like turnin the wrench yourself
follow the DIY and it shouldn't be too bad. This forum is the only tool you'll ever need