Comandante Grinders have refined the geometry and structure of the Nitro Blade burr to get the grind performance we were looking for in a hand grinder. The particle distribution which worked best with brewing fresh ground specialty coffee beans. Manufacturing a Nitro Blade is a serious engineering task which requires special tools and machinery, excellent craftsmanship and lots of experience. High-nitrogen martensitic steel is extremely difficult to work with. But when finished, it is tough, highly wear resistant and has a high degree of edge retention. This is what we want in a grinder.