X64 SD Single Dose Coffee Grinder - Mahlkonig The Mahlkonig X64 SD grinder is a new home grinder. - Grinder Features: • High-quality 64mm flat burrs for precise and uniform grinding. • Stepless grind size adjustment, allowing you to set the grind to suit all types of coffee. • Single dose with near-zero retention. • Included accessories: anti-popcorn device, bellows, hopper, and dosing cup.