· *All parts of the reusable K Cup are made of high quality 304 stainless steel,strong and durable,good filtration effect, easy to clean. · *Compatible with Ninja CFP201,CFP300,CFP301,CFP400 dual brew coffee maker.Pay attention:these reusable coffee pods are designed for the system that has 3 dispenser points at the top. · *If you need to get a quick and easy cup of coffee with a strong flavor, this stainless steel reusable K-cup can make a difference for you. · *Stainless steel k cups can cut down on cost(using them are more economical than purchasing disposable pods),while reducing the environmental impact of the disposable pods,besides,stainless steel K-cups last longer than plastic reusable K-cups(There is no risk of the hinge breaking).We also recommend descaling your k cups every month by soaking it in a solution of distilled vinegar and warm water,this will increase its lifespan. · *If you have any questions, please feel free to contact MJULY customer service, 24-hours-on-Line-Service,sincerely for you to solve all problems about this stainless steel k cups.