☕ RUBBER KNOCK BAR FOR LESS NOISE - The removable rubber knock bar on our Kaffe knock box minimizes noise when emptying your portafilter. Easily remove it for cleaning or replacing. ☕ NON-SLIP BOTTOM - Our espresso knock box has a non-slip base, ensuring it stays in place even with strong knocks. ☕ PREMIUM ABS PLASTIC - Made from high-grade ABS plastic, our knock box is lightweight yet stable and durable. ☕ DISHWASHER SAFE - Easily clean by detaching the knock bar, emptying the box, and washing with hot water or in the dishwasher. 💯 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.