Product Information Original Three Springs: Provides consistent tamping pressure, ensuring a stable and uniform coffee puck. 30lb Constant Pressure: Maintains a reliable 30lb pressure for optimal espresso extraction, enhancing flavor and consistency. Adaptive Height: Adjusts to accommodate various grind sizes, making this espresso tamper suitable for different coffee types. Tamping Feedback: Features audible feedback confirmation when the desired pressure is achieved, allowing for precise and intuitive tamping. Product Specification Brand MHW-3BOMBER Name Astra Collection Constant Pressure Tamper Material Aluminum Alloy, SUS304 Specification 51/53.35 mm Weight 380g Origin China