Cold Steel Solid Proof DVD Sword Proof Spears In Action Big Bore Blowguns 2-Disc Cold Steel Solid Proof DVD set showcases the strength and cutting power of the world's strongest, sharpest knives through graphic demonstrations and torture testing. This two-disc collection includes the main Solid Proof feature along with a bonus DVD titled Sword Proof, which also highlights spears in action and Big Bore blowguns. Released in 2006, these films capture incredible feats of edge retention and durability that define the Cold Steel brand. A must-have for knife enthusiasts and collectors of tactical gear media. #Casual