Meion Espresso Tamper 53.3Mm Coffee Tamper, Calibrated Dual, 53.3Mm, Black ?How the MEION Dual-spring Coffee Tamper Works? A 30 lb. spring, another spring and a spring retainer between the two springs were used to eliminate pressures in excess of 30 lb. Numerous tests have shown that tamping with 30Ib pressure is more likely to extract a better-tasting espresso ?Comes with aluminum storage pad?It's more convenient to store the espresso tamper. Keeps things neat and clean. After tamping, you can place your tamper on this aluminum pad ?Level Tamping? It includes a self leveling rim making it very easy to produce consistent and even espresso pucks. 100% food-safe grade stainless steel tamper base. The ripple base was created to minimize the risk of a doughnut extraction, the indentation on the coffee bed made by the ripple tamper allows controlled water channeling and even saturation of the grounds ?Ergonomic Design for More Comfortable Grip?Several design modifications were made to achieve the most comfortable grip. MEION espresso tamper is the perfect espresso accessories tool for both aspiring home baristas and busy cafes ?Compatible with 54mm Baskets?The 53.3mm base is designed to fit 54mm portafilter baskets. We offer 45mm, 49mm, 51mm, 53.3mm, and 58.5mm tamper, compatible with various sizes of flat bottomless portafilter. Please check your portafilter size before purchasing. If you have any queries, please contact us