The vampire claw is one of the natural weapons of the vampire.
Description
The vampire on the show had razor-sharp claws on the tips of each of his fingers. Each claw was as strong as steel & swung with the vampire's superhuman strength (one of the vampire experts described a well-fed, healthy vampire as being six times as strong as a good human athlete).
In Show
To test the vampire's ability to quickly deliver a killing strike to the zombie's brain with his claws, the Deadliest Warrior crew constructed a pneumatic vampire arm rigged to strike a model zombie skull with its claws. To get the right amount of force for the strike, professional strongman Clay Edgin was brought in to give them a measurement of the kind of force a human can deal with one blow against a techscan pressure mat.
The readings for Clay's punch were then multiplied by six to get the striking force of the vampire's claw, which was then fed into their mechanical vampire arm. The arm struck the model zombie head with over 8 thousand pounds of force, piercing through to its brain in barely over 1 second