Damascus for this Signature Spay-Point Damascus Steel Folding Knife was created by forge welding multiple layers of steels into a Solid block called a billet (15N20 &1095 High Carbon Tool Steels). The billet is folded and re-welded several times to produce several layers. Patterns are created by manipulating the steel during the forge welding process. When acid is added to the blade, it attacks the layers of hard and soft steels differently, highlighting the attractive layered pattern in the Steel. The combination of layered hard and soft steel creates blade flexibility, toughness and produces invisible serrations on the blade that aid cutting, especially after heat treatment has been performed by the blacksmith. The hardness of the Damascus steel is 55-60 HRC on Rockwell scale. The handle is made out of Micarta Wood, has a unique Hand Crafted Engraved Damascus Bolster. The spine of the blade is beautifully file worked. This Signature Spay-Point Damascus Steel Folding Knife comes with a genuine leather sheath, with a belt loop on one end. This knife is a must have for any Damascus Collector, hunter or outdoors-man! ***To prevent the blade from rusting, we recommend wiping the blade clean after use, and applying oil.*** Specifications Overall Length: 7.5 Inches (open) Closed Length: 4.5 Inches Blade Length: 3.25 Inches Blade Material: Japanese 1095 High Carbon, 15N20 Alloy Steel Blade Thickness: 4mm Blade Hardness: 55-60 HRC Rockwell Scale Blade Deployment Type: Manual Folding, Thumb Stud Sharpness & Functionality: Extremely Sharp, Durable, Functional Blade Features: Nesmuk Profile, Spaypoint, Thumb Stud Handle: Solid STEEL Bolstering, ENGRAVED BOLSTER, Micarta Wood Grip Other Features: Mosaic Pins, Solid Steel & Brass Frame w/ File Work Includes: Genuine Leather Sheath Blade Lock: Liner Locking, Strong