The KINGrinder K4 and K6 are premium manual coffee grinders that share a host of compelling features, including a sleek and portable design, durable construction, precise grind quality, and generous hopper capacity. The K4 features a Titanium-Coated burr set for enhanced durability and longevity, while the K6 employs a Stainless Steel burr set for corrosion resistance and ease of maintenance.