Control your strength The Attento Click Mat, just as all the Attento products, is designed to help you streamline your barista techniques. The Click Mat does this by telling you and your co-workers when you have tamped with a specific force. “It just said click!” The design of the product is intuitive as can be. To use it simply remove the silicone tamping sheet from the Click Mat and use the included allen key to adjust at which force it shall signal. You can set it between 10 to 25 kg. The signal is a very distinct “click!” at the moment you hit the target force. All materials used in the product are top notch. stainless steel, black nylon and food safe silicone. The Attento Click Mat will be your companion for many years to come :) 107mm Diameter 15mm thick including body of stainless steel plate