Why Choose IKAPE Coffee Tamper As one of the core tools for espresso making, the Coffee Tamper is directly related to the uniformity of the coffee cake, extraction quality and flavor performance. Together with the grinding degree, powder amount and water temperature, it forms the “Golden Four” of extraction variables, and the consistency of the powder is the cornerstone of stable production. There are uneven density and lumps in the ground coffee powder, and the powder compacting hammer compresses the powder layer into a uniform Coffee Puck through vertical pressure to ensure that the water flows evenly through, avoiding the “channeling effect” (Channeling). Built-in Dual Springs Calibrated Tamper This V3 coffee tamper has built-in dual springs, where the main spring is calibrated at 30 pounds of pressure to provide the ideal pressing pressure. The other spring is used to keep the tamper balanced during pressing, preventing unbalanced coffee powder pressing. Cylindrical Center Shaft for Smoother Pressing This V3 espresso tamper has been improved many times and upgraded to a cylindrical center shaft for smoother pressing and long-lasting use with no stalling High quality material is healthier Made of food grade 304 stainless steel and aluminum alloy, green material, harmless to the human body, you can rest assured that use. Ergonomically Designed Handle IKAPE coffee tamper's handle is ergonomically designed for a comfortable grip and balanced force, no fatigue from exertion. Characteristics Size Model: 51.00mm/53.30mm/58.35mm Material: The shell is aluminum alloy,and the base is 304 stainless steel