You can get a Titan belt, they're also IPF approved. If you order it from liftinglarge.com you'll have it within 2-3 days, whereas you'll probably have to wait at least 6 weeks if you order a belt from Inzer. I recently got the Titan Brahma belt (13mm, I got a lever buckle, but you can get it with single or double prong) from liftinglarge. They shipped it the same day, I had it in two days.
Edit: if you really want to go with Inzer it looks like you can select 1 or 2 prong on the belt page. http://www.inzernet.com/detail_belt....RBELT_BUCKLE13