Optimal Size and Compatibility: Each pack includes 3 cold brew coffee filters, perfectly sized for 64oz wide mouth jars. The filters measure approximately 8 x 21 cm (3.2 x 8.3 inches) with an inner mouth diameter of 6.7 cm (2.6 inches) and a bottom diameter of 5 cm (2 inches), ensuring a snug fit and efficient brewing. Superior Material for Healthier Brewing: Crafted from high-quality stainless steel, our cold brew filters and designed for durability. This ensures a safe brewing process free from harmful chemicals, providing you with a pure, robust coffee flavor that is consistent with every use. User-Friendly Brewing Process: To use, simply place the filter in a jar, add your preferred coffee or tea, and refrigerate for over 12 hours for a rich, smooth cold brew. The simplicity of the process makes it easy for anyone to enjoy their favorite beverages with minimal effort. Hassle-Free Maintenance: Our stainless steel filters are not only effective but also easy to clean. A quick rinse under the tap removes coffee grounds or tea leaves, making them ready for reuse. This not only saves time but also reduces waste, making it an eco-friendly option for daily brewing. Size: about 8x21cm Color: Silver Material: stainless steel Package Contents: 3 * stainless steel coffee filter (with sealing ring) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.