Like most items in the Winkler Knives product line, the WK Crusher Spike Knife was designed to meet the needs of an active duty Special Operations Team. A group from Naval Special Warfare familiar with the uncompromising performance of the WK Belt Knife wanted the same attributes in a knife with glass breaking capabilities. This is it. The rounded, integral extended tang meets the need and is comfortable to carry. Knife Specifications Blade steel: 80CrV2 Black oxide no-glare finish .193" blade stock and 1.530" blade depth, full skeletonized tang. Sheath Lined Kydex® with leather cover Designed for multiple carry options (See our Info page for carry options) Comes with original box and papers. Excellent condition.