[Consistent Pressure]Spring-loaded design automatically adjusts to maintain a constant 30-pound pressure for every brew, ensuring uniformly extracted espresso. [Optimized Extraction]Threaded base design not only enhances aesthetics but also optimizes coffee flow, improving extraction uniformity and overall coffee quality. [Secure Grip]Knurled texture handle provides excellent slip resistance, ensuring a stable hold even with wet or oily hands for comfortable operation. [Durable Construction]Crafted from high-quality aluminum and stainless steel, this tamper is built to withstand high-intensity use scenarios with stable performance. [Easy Cleaning]Detachable design allows for effortless cleaning and quick reassembly, keeping the tool pristine after each use. Specifications: Available Sizes: 51mm, 53mm, 58.35mm Dimensions: 51mm (51*51*58mm), 53mm (53*53*58mm), 58.5mm (58.35*58.35*58mm) Materials: Walnut wood, Aluminum alloy, 304 Stainless steel Handle: Knurled texture for slip resistance Pressure: 30-pound constant force