Protects the Life of Your Coffee Machine or Brewer: coffee maker water filter stop the build-up of impurities that can eventually cause damage to your coffee machine or brewer. This charcoal filter for coffee maker is independently certified for NSF-42 to the safety and integrity of all components in the filter. You don't need to decide between safety and quality, with you receive both Compatible Models: Compatible with all Coffee Machines and coffee maker water filters. Value Pack: Convenient 12-pack provide up to two years of great tasting coffee Color: As Shown Material: Non-Woven Fabric Coconut Shell Activated Carbon Package Contents: 12*pcs Coffee Filter 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.