Dan Sullivan, USMC Vet and owner of DSK Tactical out of Arizona is a highlyÌ´Ì_sought after custom knife maker best known for his overbuilt ginormous tactical knives like the hugely popular Kickstand. Dan epitomizes quality and integrity, the same thing he instills into every one of his creations. He builds knives that withstand abuse and hard use in the field, not a shelf queen for your admiration. His newest release is a larger run of a model he developed last year called the Diamondback.