[Compatible Models] This three-ear portable filter 51mm is suitable for Gevi, Wirsh, CASABREWS, Yabano, Hamilton Beach, Mr. Coffee, and other 51mm portable filters. The thickness of the three ears is 3.88-4mm. [Repair Channel] The bottomless design allows observation of the flow column, flow rate, color, and flow column patterns to identify defects and inconsistencies before extraction, enabling better assessment of extraction uniformity. [Smooth Walnut Handle] Features an ergonomic design with a solid wood handle for comfortable grip and stable operation. [Food Grade Stainless Steel] This bottomless filter is made of food grade stainless steel, which is environmentally friendly, non-toxic, hygienic, safe, and offers excellent oxidation resistance, corrosion resistance, rust resistance, and durability. Material: Stainless steel Color: As shown Package Contents: 1 x Coffee machine handle Note: Light reflection and different displays may cause slight variations in the color of the item in the picture compared to the real thing. Measurement may vary by +/- 1-3cm.