Feature: 1. MAIN PURPOSE: When the filter is knocked off, the coffee grounds directly fall into the grinding box, and the raised rear wall prevents splashing.    2. EXCELLENT METAL: The knock box body is made of PTFE steel, not easy to deform, the knock rod will not scratch the filter, eliminaes overflow.    3. EASY TO INSTALL: The coffee knock box is suitable for most coffee machines, and installed on the drip tray in a space saving way, always keeping clean.    4. DAMPING BELT: The shock absorption belt at the bottom of the knock box can prevent movement during use, reduce noise and prevent scratching.    5. EASY CLEANING: Using the coffee knock box and knock stick, you can grind coffee without cleaning the workbench, easy to clean and maintain.       Specification:                Item Type: Coffee Knock Box Material: PTFE Steel Weight: Approx. 1734g / 61.2oz Size: Approx. 20.5 x 14.5 x 14cm / 8.1 x 5.7 x 5.5in                    Package List: 1 x Knock Box       1 x Knock Stick