☕ HANDS-FREE GRINDER ATTACHMENT - Kaffe's dosing cups feature a built-in grinder activating tab, fitting neatly into any espresso machine that accommodates a 54mm portafilter. ☕ PERFECT COFFEE EVERY TIME - Ensure accuracy in weighing your coffee beans or grounds, allowing for easy transfer between grinder and portafilter. ☕ FOOD GRADE ALUMINUM - Made from premium, food-grade aluminum alloy, our dosing cup is lightweight yet durable. ☕ COMPATIBLE WITH ALL 54MM PORTAFILTERS - Fits all 54mm portafilters. Attach the dosing cup to the grinder, let the coffee fall in, attach the portafilter, flip, and you're done! 💯 LIFETIME MANUFACTURER'S WARRANTY - We take pride in delivering premium quality espresso accessories. If you're not satisfied, contact us via Amazon for a full refund or replacement.