The exclusive and limited edition White Deer Build-Your-Own Damascus Knife Blank features FULL LENGTH and condensed Damascus forge welded pattern that produces micro-serrations resulting in an extremely sharp edge. Four pin holes are in the handle tang that are 2.25mm diameter, along with a 6mm diameter lanyard hole. The steel is heat treated and will last a lifetime. Specifications Overall Length: 10.05 Inches Blade Length: 5.125 Inches Blade Material: Japanese 1095 High Carbon, 15N20 Alloy Steel Blade Thickness: 4.5mm Hardness or Temper: 55-60 HRC Rockwell Scale Tang: Full Tang, Damascus Steel, 4 Pin Holes, Lanyard Hole Sharpness & Functionality: Very Sharp, Made for Functional Use Blade Features: Drop Point, Angled Upper Spine Handle Length: 4.5 Inches Handle: Full Damascus Steel Blank Tang Pin Hole Size: 2.25mm Other Features: Ready to Make