Commercial Stainless Steel Coffee Tamper Barista Espresso Tamper Coffee Grinder. Tamper diameter:58.5/57.5/57mm, Chose one of the three diameters. Bottom Six non-slip mat. Food grade stainless steel, which has features of excellent corrosion resistance, security and environmental protection. 1 x Coffee Tamper. (Do not include the Coffee Boilded Handle).