PROTECTIVE MATERIAL---The coffee knock box is made of of Silicone material which is durable and non- . It can keep from shifting during use, also it can reduce noise and 't scratch kitchen countertops . PERFECT SIZE---The size of Espresso Knock Box is perfect for storing under most espresso machines. The capacity is enough to store the grounds. The wide opening can prevent coffee grounds from splashing. EASY TO CLEAN---The removable knock bar is easy to clean. You can clean it by hand,and the Espresso Dump Bin is dishwasher safe, it will save your time on the washing the coffee tool. MUTIPLE USES---This coffee knock box can be used in cafe , coffee shop,canteen , restaurant, bar, etc. Colour:Black Material:Silica gel Package Contents: 1 x Coffee Knock Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.