Winner of Coffee Geeks ***6 Editor Choice Award for the Best Training Tool category, the Espro Calibrated Tamper features world class construction. This unique tamper automatically clicks when *0 pounds of force has been exerted onto it, alerting you when you have reached the proper amount of tamp pressure for espresso extraction. These Espro tampers feature stainless steel convex bases and are available in *3, *7 and *8mm sizes, and all tamper sizes feature a polished black handle. Espro Calibrated Tampers are designed, machined and assembled in Vancouver Canada.