MHW-3BOMBER Magnetic Dosing Funnel The MHW-3BOMBER Magnetic Dosing Funnel is a key espresso accessory made of high-quality aluminum alloy or SUS304 stainless steel that uses strong integrated magnets to securely attach to your portafilter basket, preventing coffee grounds from spilling and ensuring a clean and consistent workflow. It is available in various sizes to fit different machines. Key Features and Design Magnetic Stability: The funnel features multiple (e.g., 10 or 36 depending on the series) evenly embedded magnets that create a strong attraction to the portafilter basket, ensuring it stays firmly in place even if inverted, without needing clips or screws. Reduces Mess and Waste: The flaring or wide-mouthed design of the upper opening helps guide all ground coffee directly into the basket, significantly reducing spillage and keeping the countertop clean. "Outward Locking" Design: The funnel attaches to the outer rim of the portafilter basket, which prevents it from occupying the internal space of the basket and avoids leaving an indentation in the coffee grounds when removed, maximizing the usable depth for dosing. Durable Materials: It is crafted from food-grade, rust-resistant, and anti-corrosion materials, such as lightweight aluminum alloy or SUS304 stainless steel, designed for long-term use. Compatibility: Available in multiple diameters including 51mm, 53-54mm, and 58mm to fit most standard portafilters on the market, although the magnetic force may be weaker on some non-magnetic stainless steel or aluminum baskets. Anti-Slip Silicone (on some models): Some versions, like the YU series, include a silicone surface design for enhanced grip and protection of the ring. Product Specifications Attribute Detail Brand MHW-3BOMBER Material Aluminum Alloy or SUS304 Stainless Steel, Magnets, Silicone (on some models) Available Sizes 51mm, 53-54mm, 58mm Weight Varies by size and material (e.g., approx. 32g for an aluminum 58mm, 100g for a stainless steel 58mm YU series) Compatibility Note May not be compatible with all specific grinder holders or non-magnetic baskets; generally not recommended to leave on while tamping.