Knock Box Basic Red - Our sturdy Knockbox Basic is designed to make handling and cleaning fast, efficient and enjoyable. The heavy aluminum knock bar is damped with a food grade silicone tube and can easily be removed from the trendy duroplastic casing, which is of course dishwasher safe as well as food-grade. The silicone base ring gives it exceptional stability and protects your work surfaces. Material: Plastic, Silicone food grade - Dimensions: 4 inch x H 4.7 inch 10 x H12 cm Knock Box Basic helps you to recycle the collected waste coffee grounds as a great organic fertilizer for your garden. You could also store the pucks until they are dried and then use as charcoal for BBQ or fireplace, its all organic!