Replaceable: This is an assembleable coffee filter cup, made with spiral ribs, designed to be compatible with the V60 style filter system. Conical: Compared with traditional fan-shaped filter cups, this conical design allows for a deeper layer of coffee grounds. Water flows toward the center, increasing contact time with the coffee powder and enabling more extraction for enhanced flavor. Large single hole: The bottom features a large central hole that allows water to flow freely, similar to Nel Drip methods, without restricting flow. This enables control over brewing speed and helps customize the taste of your coffee based on pouring technique. Spiral ribs: Internal spiral ribs extend from the bottom to the top, creating channels between the paper filter and the cup. This promotes even water distribution, prevents filter clogging, and allows air to escape freely during brewing, contributing to consistent extraction. Color: Black / White / Red / Blue Material: Plastic Package Contents: 1 x Coffee Filter Cup Note: Light reflection and different displays may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.