The SOG Vulcan is also formidable with a powerful strength of construction. There is nothing weak about the Vulcan. Take for instance the patented Arc-Lock Or, the full steel liners encased in glass reinforced Zytel handles. The blade is a San Mai steel with a tanto shape and includes the new kick deployment of the blade. Press on the back of the blade and the knife comes out fast. Reversible clip, Arc-Lock, and double thumb studs make for complete ambidextrous use. Limited Production