The ESPRO Tamper is calibrated to 30 pounds, helping you achieve the perfect force every time; Taste the difference in each sip. A gentle click that you feel rather than hear alerts you when you’ve reached the perfect force without disturbing your espresso grounds; Feel the tamp, be the tamp. Carefully calibrated in-factory for reliable performance; Focus on enjoying the espresso experience. Designed to be the same size and shape as traditional tamps, with a precisely balanced base for even tamping; Feels just right in your hand. The stainless steel base and anodized aluminium handle are sturdy and reliable long-term; Minimally designed to never go out of style. 58 mm convex base.