tradertator
Grandmaster
What are those? They are pretty cool. Googling "rat pack" and "knife" came up with a lot of things, these knives were not any of them.
It's named after Navy Seal Tom "Rat" Ratzlaff, and is real popular with the Sayoc Kali group. They're made by Harley Elmore at Headhunter Blades. You can order them from the Sayoc Group or directly from Harley at Warriors Way in Texas. Warriors Way ran a sale on them last Memorial Day, otherwise their pretty pricey.
Honestly, it's probably my favorite defensive knives though, and flows in my hand better than anything else I've found. The sheath is awesome too, and is really low profile.