Compatible with 870, 876, and 878 coffee machines, these grinding adjustment shims are designed to improve grinding precision, supporting more consistent extraction and enhanced flavor. Key benefits Improves grind precision to help achieve better extraction and richer flavor. Precisionengineered design that supports maximizing the potential of your beans. A practical accessory for serious coffee enthusiasts seeking a professional grinding solution. What it is Grinding adjustment shims engineered for 870, 876, and 878 models. Focused on delivering enhanced grinding performance to support quality coffee results. Who should consider it Coffee enthusiasts looking to elevate their grinding accuracy and consistency. Professionals and hobbyists aiming to maintain equipment performance and serve better coffee. Use scenarios Home coffee brewing: use with your 870/876/878 to refine grind settings for espresso or filter coffee and improve overall flavor and extraction. Commercial shops: maintain equipment performance and consistency across beverages that rely on precise grind sizes. Specialty drinks: prepare fine grinds for espresso and other specialty preparations like concentrated cold brew or signature drinks that benefit from controlled grind size.