About This DURABLE DESIGN WITH RUBBER KNOCK BAR: Made with a sturdy plastic body and soft rubber knock bar, this espresso knock box helps protect your portafilter from scratches while providing reliable daily use. COMPACT 5.5 INCH SIZE: Measuring approximately 5.5 inches in diameter and 5 inches in height, this small knock box fits neatly beside most espresso machines and saves valuable countertop space. REMOVABLE KNOCK BAR FOR EASY CLEANING: The detachable rubber knock bar allows convenient cleaning and maintenance, making it easier to keep your espresso accessories hygienic. NON-SLIP BASE FOR STABLE USE: The rubber gasket on the bottom helps improve stability during use, keeping the knock box steady while disposing of coffee pucks. PERFECT FOR HOME BARISTAS & CAFES: Designed for espresso lovers, home kitchens, coffee bars, cafes, and restaurants to quickly collect used coffee grounds and maintain a cleaner brewing area.