Compact, dispose of your used coffee pucks quickly. Super strong and sturdy, and even tucks away on the drip tray of your espresso machine. Keep your work area clean by disposing of espresso grounds in a knock box. Can be removed from its plastic holder for emptying and cleaning, non slip rubber pad on the bottom helps reduce noise. Suitable for home, coffee house, Western restaurants, bars and other places where need to make coffee. Specification: Material: ABS Plastic Size Chart: Style 1: 12x12.5cm / 4.72x4.92inch Style 2: 11x10.5cm / 4.33x4.13inch Package Includes: 2 Pieces Coffee Knock Box (Style 1 + Style 2) Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.