Gut Hook Damascus Skinner Knife Blank Blade. This is a beautifully crafted Custom Made Damascus Hunting Knife. Damascus for this 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. The hardness of the Damascus steel is 55-60 HRC on Rockwell scale. This a unique knife because half of the blade is Damascus Steel and the other half is 440 Stainless Steel with four holes so you can custom build this knife with your choice of handle. The knife has a sharp gut hook right at the top of the blade. This knife is a must have for any Knife Maker! Specifications Overall Length: 8 Inches Blade Length: 4 Inches Blade Material: Japanese 1095 High Carbon, 15N20 Alloy Steel Blade Thickness: 4.25mm Tang Thickness: 4.5mm Pin Hole Diameter: 2.5mm Number of Pin Holes: 4 Handle Length: 4 Inches