COFFEE GRINDING TOOL: This stainless steel grind size reference card identifies eight grind sizes in micrometers (microns) for brewing methods including Espresso, Moka, Syphon, Drip Coffee, Pour Over, and Cold Brew. Use the right grind size to maximize flavor extraction from your coffee beans. FOODGRADE MATERIAL: Made from foodgrade 304 stainless steel, this reference card is designed for safety and longevity. It is rustresistant and wearresistant, providing a reliable accessory that will perform for years without compromising quality. ULTRAPORTABLE DESIGN: Weighing only 5.2 grams (0.11 lbs), this lightweight grind size reference tool easily fits into a pocket or coffee kit. Take it anywhere, whether at home, traveling, or camping, to maintain consistent coffee quality wherever you go. SLEEK AND SLIM PROFILE: At just 0.03 inches thick, the card remains slim and easy to store. After use, keep it in a protective case to prevent bending or deformation, preserving accuracy and functionality for all your coffee grinding needs. Practical use scenarios: Home brewing: quickly verify grind sizes for espresso machines, pour over setups, or drip brewers to achieve flavor balance. Travel: carry in a bag or kit to ensure consistent grind sizing when beans or equipment vary between trips. Outdoor or onthego: use as a compact reference during camping or daily outings to ensure reliable results with minimal gear.