Now available from Casstrom, you can now customize your own blade with the handle fittings you desire. These blade blanks are the same cut and size as the production models found in the existing line. Choosing the most popular models and steel types, CAS proudly offers you an opportunity to customize your own Casstrom knife. ABOUT THE STEEL: O2 HIGH CARBON TOOL STEEL Böhler Tool Steel K720 is a very tough and strong oil hardened high carbon tool steel. The chemical composition allows it to be hardened to a high degree whilst maintaining ductility and toughness at the same time as it is easy to sharpen and can obtain a razor sharp edge. Whilst easy to sharpen, the low chromium content means it will tarnish if left wet and it must therefore be wiped after use and protected by oil or wax when put away for storage. Steel analysis: C. 0.9%, Si. 0.25%, Mn. 2.0%, Cr. 0.35% V. 0.1% (HRC 58-60) Overall: 8 5/8" Blade Length: 4" Handle Length: 4 5/8" Weight: 3oz Blade Steel: O2 O2 Tool Steel (Bohler K720) Classic Scandi Grind