Damascus Steel Ruby’s Demon Killing Knife – Supernatural Stag Horn Antler Handle Sharp Edge Etched Knife with Sheath. Overall Length 31cm. Blade material is Pure Damascus Steel. Comes with Fine Quality Thick Leather Sheath. Survival Knife. The Demon-Killing Knife, or most commonly known as Ruby’s Knife, is an ancient knife that was created by the Kurds which possesses the power to permanently kill most demons, hellhounds, and other demonic entities. Though it somehow came into the possession of Ruby, it eventually passes onto Sam and Dean Winchester, who use it as their most common means of killing demons. This Damascus Version of Knife is Designed for Hunting and Everyday Carry Purpose after looking at the demand of our customers. The Mixture of Plain and Serrated Damascus Steel Etched Blade is Highly Tempered and Sharp enough to Cut. This Knife can Prove a Helpful Tool for Outdoor Camping.