Hand crank coffee grinder

The coffee grinder is crafted with domestic martensitic stainless steel using advanced five-axis CNC cutting technology. This results in a 55-58HRC hardness, allowing for quick and even grinding of coffee beans with precise and concentric coordination. The high-quality materials used include space aluminum, stainless steel, and PC, while the sharp pure steel grinding core is made with five-axis CNC machining for efficient grinding.