Crafted from high durability stainless steel, these shims are wear resistant, easy to replace, and ensures seamlesses compatibility with your coffee machine ' s burr requirements Specially designed for 870, 876, and 878 coffee machines, these grinding shims enhances your grinding precisions, ensuring grinding for extraction and flavor Suitable for coffee enthusiasts seeking perfect grinding, professional aiming to elevating their service standards, and coffee makers lookings for efficient grinding solution Perfect for home coffee brewing, commercial coffee shops maintaining equipment at, and specialty drink preparation requiring fine grounds like espresso and cold brew Enhancing your coffee by the full and taste potential of your beans with these precisions engineered grinding shims, a must have accessory for any serious coffee aficionado